diff --git a/Examples/dbcontext_01/Controllers/ValuesController.cs b/Examples/dbcontext_01/Controllers/ValuesController.cs
deleted file mode 100644
index 23fd09ae..00000000
--- a/Examples/dbcontext_01/Controllers/ValuesController.cs
+++ /dev/null
@@ -1,214 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using FreeSql;
-using Microsoft.AspNetCore.Mvc;
-
-namespace dbcontext_01.Controllers
-{
-    [Route("api/[controller]")]
-    [ApiController]
-    public class ValuesController : ControllerBase
-    {
-
-		IFreeSql _orm;
-		public ValuesController(SongContext songContext, 
-			IFreeSql orm1, IFreeSql orm2, 
-			IFreeSql<long> orm3
-			) {
-
-			_orm = orm1;
-			
-		}
-
-		// GET api/values
-		[HttpGet]
-        async public Task<string> Get()
-        {
-
-			long id = 0;
-
-			try {
-
-				var repos2Song = _orm.GetRepository<Song, int>();
-				repos2Song.Where(a => a.Id > 10).ToList();
-				//查询结果，进入 states
-
-				var song = new Song { };
-				repos2Song.Insert(song);
-				id = song.Id;
-
-				var adds = Enumerable.Range(0, 100)
-					.Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
-					.ToList();
-				//创建一堆无主键值
-
-				repos2Song.Insert(adds);
-
-				for (var a = 0; a < 10; a++)
-					adds[a].Title = "dkdkdkdk" + a;
-
-				repos2Song.Update(adds);
-				//批量修改
-
-				repos2Song.Delete(adds.Skip(10).Take(20).ToList());
-				//批量删除，10-20 元素的主键值会被清除
-
-				adds.Last().Url = "skldfjlksdjglkjjcccc";
-				repos2Song.Update(adds.Last());
-
-				adds.First().Url = "skldfjlksdjglkjjcccc";
-				repos2Song.Update(adds.First());
-
-
-				using (var ctx = new SongContext()) {
-					
-					ctx.Songs.Select.Where(a => a.Id > 10).ToList();
-					//查询结果，进入 states
-
-					song = new Song { };
-					//可插入的 song
-
-					ctx.Songs.Add(song);
-					id = song.Id;
-					//因有自增类型，立即开启事务执行SQL，返回自增值
-
-					adds = Enumerable.Range(0, 100)
-						.Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
-						.ToList();
-					//创建一堆无主键值
-
-					ctx.Songs.AddRange(adds);
-					//立即执行，将自增值赋给 adds 所有元素，因为有自增类型，如果其他类型，指定传入主键值，不会立即执行
-
-					for (var a = 0; a < 10; a++)
-						adds[a].Title = "dkdkdkdk" + a;
-
-					ctx.Songs.UpdateRange(adds);
-					//批量修改，进入队列
-
-					ctx.Songs.RemoveRange(adds.Skip(10).Take(20).ToList());
-					//批量删除，进入队列，完成时 10-20 元素的主键值会被清除
-
-					//ctx.Songs.Update(adds.First());
-
-					adds.Last().Url = "skldfjlksdjglkjjcccc";
-					ctx.Songs.Update(adds.Last());
-
-					adds.First().Url = "skldfjlksdjglkjjcccc";
-					ctx.Songs.Update(adds.First());
-
-					//单条修改 urls 的值，进入队列
-
-					//throw new Exception("回滚");
-
-					//ctx.Songs.Select.First();
-					//这里做一个查询，会立即打包【执行队列】，避免没有提交的数据，影响查询结果
-
-					ctx.SaveChanges();
-					//打包【执行队列】，提交事务
-				}
-
-				using (var uow = _orm.CreateUnitOfWork()) {
-
-					var reposSong = uow.GetRepository<Song, int>();
-					reposSong.Where(a => a.Id > 10).ToList();
-					//查询结果，进入 states
-
-					song = new Song { };
-					reposSong.Insert(song);
-					id = song.Id;
-
-					adds = Enumerable.Range(0, 100)
-						.Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
-						.ToList();
-					//创建一堆无主键值
-
-					reposSong.Insert(adds);
-
-					for (var a = 0; a < 10; a++)
-						adds[a].Title = "dkdkdkdk" + a;
-
-					reposSong.Update(adds);
-					//批量修改
-
-					reposSong.Delete(adds.Skip(10).Take(20).ToList());
-					//批量删除，10-20 元素的主键值会被清除
-
-					adds.Last().Url = "skldfjlksdjglkjjcccc";
-					reposSong.Update(adds.Last());
-
-					adds.First().Url = "skldfjlksdjglkjjcccc";
-					reposSong.Update(adds.First());
-
-					uow.Commit();
-				}
-
-				
-
-				//using (var ctx = new SongContext()) {
-
-				//	var song = new Song { };
-				//	await ctx.Songs.AddAsync(song);
-				//	id = song.Id;
-
-				//	var adds = Enumerable.Range(0, 100)
-				//		.Select(a => new Song { Create_time = DateTime.Now, Is_deleted = false, Title = "xxxx" + a, Url = "url222" })
-				//		.ToList();
-				//	await ctx.Songs.AddRangeAsync(adds);
-
-				//	for (var a = 0; a < adds.Count; a++)
-				//		adds[a].Title = "dkdkdkdk" + a;
-
-				//	ctx.Songs.UpdateRange(adds);
-
-				//	ctx.Songs.RemoveRange(adds.Skip(10).Take(20).ToList());
-
-				//	//ctx.Songs.Update(adds.First());
-
-				//	adds.Last().Url = "skldfjlksdjglkjjcccc";
-				//	ctx.Songs.Update(adds.Last());
-
-				//	//throw new Exception("回滚");
-
-				//	await ctx.SaveChangesAsync();
-				//}
-			} catch {
-				var item = await _orm.Select<Song>().Where(a => a.Id == id).FirstAsync();
-
-				throw;
-			}
-
-			var item22 = await _orm.Select<Song>().Where(a => a.Id == id).FirstAsync();
-			var item33 = await _orm.Select<Song>().Where(a => a.Id > id).ToListAsync();
-
-			return item22.Id.ToString();
-		}
-
-        // GET api/values/5
-        [HttpGet("{id}")]
-        public ActionResult<string> Get(int id)
-        {
-            return "value";
-        }
-
-        // POST api/values
-        [HttpPost]
-        public void Post([FromBody] string value)
-        {
-        }
-
-        // PUT api/values/5
-        [HttpPut("{id}")]
-        public void Put(int id, [FromBody] string value)
-        {
-        }
-
-        // DELETE api/values/5
-        [HttpDelete("{id}")]
-        public void Delete(int id)
-        {
-        }
-    }
-}
diff --git a/Examples/dbcontext_01/DbContexts/SongContext.cs b/Examples/dbcontext_01/DbContexts/SongContext.cs
deleted file mode 100644
index 45e174d5..00000000
--- a/Examples/dbcontext_01/DbContexts/SongContext.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-using FreeSql;
-using FreeSql.DataAnnotations;
-using System;
-using System.Collections.Generic;
-
-namespace dbcontext_01 {
-
-	public class SongContext : DbContext {
-
-		public DbSet<Song> Songs { get; set; }
-		public DbSet<Tag> Tags { get; set; }
-
-		protected override void OnConfiguring(DbContextOptionsBuilder builder) {
-			builder.UseFreeSql(dbcontext_01.Startup.Fsql);
-		}
-	}
-
-
-	public class Song {
-		[Column(IsIdentity = true)]
-		public int Id { get; set; }
-		public DateTime? Create_time { get; set; }
-		public bool? Is_deleted { get; set; }
-		public string Title { get; set; }
-		public string Url { get; set; }
-
-		public virtual ICollection<Tag> Tags { get; set; }
-
-		[Column(IsVersion = true)]
-		public long versionRow { get; set; }
-	}
-	public class Song_tag {
-		public int Song_id { get; set; }
-		public virtual Song Song { get; set; }
-
-		public int Tag_id { get; set; }
-		public virtual Tag Tag { get; set; }
-	}
-
-	public class Tag {
-		[Column(IsIdentity = true)]
-		public int Id { get; set; }
-		public int? Parent_id { get; set; }
-		public virtual Tag Parent { get; set; }
-
-		public decimal? Ddd { get; set; }
-		public string Name { get; set; }
-
-		public virtual ICollection<Song> Songs { get; set; }
-		public virtual ICollection<Tag> Tags { get; set; }
-	}
-}
diff --git a/Examples/dbcontext_01/Program.cs b/Examples/dbcontext_01/Program.cs
deleted file mode 100644
index bdd2cc14..00000000
--- a/Examples/dbcontext_01/Program.cs
+++ /dev/null
@@ -1,67 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.IO;
-using System.Linq;
-using System.Numerics;
-using System.Threading.Tasks;
-using FreeSql;
-using FreeSql.DataAnnotations;
-using Microsoft.AspNetCore;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
-
-namespace dbcontext_01
-{
-    public class Program
-    {
-
-		public class Song {
-			[Column(IsIdentity = true)]
-			public int Id { get; set; }
-			public string BigNumber { get; set; }
-
-			[Column(IsVersion = true)]//使用简单
-			public long versionRow { get; set; }
-		}
-
-		public class SongContext : DbContext {
-
-			public DbSet<Song> Songs { get; set; }
-
-			protected override void OnConfiguring(DbContextOptionsBuilder builder) {
-				builder.UseFreeSql(fsql);
-			}
-		}
-		static IFreeSql fsql;
-		public static void Main(string[] args) {
-			fsql = new FreeSql.FreeSqlBuilder()
-				.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\dd2.db;Pooling=true;Max Pool Size=10")
-				.UseAutoSyncStructure(true)
-				.UseLazyLoading(true)
-				.UseNoneCommandParameter(true)
-
-				.UseMonitorCommand(cmd => Trace.WriteLine(cmd.CommandText))
-				.Build();
-
-			using (var ctx = new SongContext()) {
-				var song = new Song { BigNumber = "1000000000000000000" };
-				ctx.Songs.Add(song);
-
-				ctx.Songs.Update(song);
-
-				song.BigNumber = (BigInteger.Parse(song.BigNumber) + 1).ToString();
-				ctx.Songs.Update(song);
-
-				ctx.SaveChanges();
-			}
-
-			CreateWebHostBuilder(args).Build().Run();
-		}
-
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
-    }
-}
diff --git a/Examples/dbcontext_01/Properties/launchSettings.json b/Examples/dbcontext_01/Properties/launchSettings.json
deleted file mode 100644
index a7caa4d3..00000000
--- a/Examples/dbcontext_01/Properties/launchSettings.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:53030/",
-      "sslPort": 0
-    }
-  },
-  "profiles": {
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "dbcontext_01": {
-      "commandName": "Project",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      },
-      "applicationUrl": "http://localhost:53031/"
-    }
-  }
-}
\ No newline at end of file
diff --git a/Examples/dbcontext_01/Startup.cs b/Examples/dbcontext_01/Startup.cs
deleted file mode 100644
index 4a0edf5a..00000000
--- a/Examples/dbcontext_01/Startup.cs
+++ /dev/null
@@ -1,91 +0,0 @@
-using FreeSql;
-using FreeSql.DataAnnotations;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using Swashbuckle.AspNetCore.Swagger;
-using System;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-
-namespace dbcontext_01
-{
-    public class Startup
-    {
-        public Startup(IConfiguration configuration, ILoggerFactory loggerFactory)
-        {
-            Configuration = configuration;
-
-			Fsql = new FreeSql.FreeSqlBuilder()
-				.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Pooling=true;Max Pool Size=10")
-				//.UseConnectionString(FreeSql.DataType.SqlServer, "Data Source=.;Integrated Security=True;Initial Catalog=freesqlTest;Pooling=true;Max Pool Size=10")
-				.UseLogger(loggerFactory.CreateLogger<IFreeSql>())
-				.UseAutoSyncStructure(true)
-				.UseLazyLoading(true)
-				.UseNoneCommandParameter(true)
-
-				.UseMonitorCommand(cmd => Trace.WriteLine(cmd.CommandText),
-					(cmd, log) => Trace.WriteLine(log)
-				)
-				.Build();
-
-			Fsql2 = new FreeSql.FreeSqlBuilder()
-				.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document222.db;Pooling=true;Max Pool Size=10")
-				//.UseConnectionString(FreeSql.DataType.SqlServer, "Data Source=.;Integrated Security=True;Initial Catalog=freesqlTest;Pooling=true;Max Pool Size=10")
-				.UseLogger(loggerFactory.CreateLogger<IFreeSql>())
-				.UseAutoSyncStructure(true)
-				.UseLazyLoading(true)
-
-				.UseMonitorCommand(cmd => Trace.WriteLine(cmd.CommandText),
-					(cmd, log) => Trace.WriteLine(log)
-				)
-				.Build<long>();
-		}
-
-		enum MySql { }
-		enum PgSql { }
-
-		public IConfiguration Configuration { get; }
-		public static IFreeSql Fsql { get; private set; }
-		public static IFreeSql<long> Fsql2 { get; private set; }
-
-		public void ConfigureServices(IServiceCollection services)
-        {
-			services.AddMvc();
-			services.AddSwaggerGen(options => {
-				options.SwaggerDoc("v1", new Info {
-					Version = "v1",
-					Title = "FreeSql.DbContext API"
-				});
-				//options.IncludeXmlComments(xmlPath);
-			});
-
-
-
-			services.AddSingleton<IFreeSql>(Fsql);
-			services.AddSingleton<IFreeSql<long>>(Fsql2);
-			services.AddFreeDbContext<SongContext>(options => options.UseFreeSql(Fsql));
-		}
-
-		public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) {
-			Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
-			Console.OutputEncoding = Encoding.GetEncoding("GB2312");
-			Console.InputEncoding = Encoding.GetEncoding("GB2312");
-
-			loggerFactory.AddConsole(Configuration.GetSection("Logging"));
-			loggerFactory.AddDebug();
-
-			app.UseHttpMethodOverride(new HttpMethodOverrideOptions { FormFieldName = "X-Http-Method-Override" });
-			app.UseDeveloperExceptionPage();
-			app.UseMvc();
-
-			app.UseSwagger();
-			app.UseSwaggerUI(c => {
-				c.SwaggerEndpoint("/swagger/v1/swagger.json", "FreeSql.RESTful API V1");
-			});
-		}
-	}
-}
diff --git a/Examples/dbcontext_01/appsettings.Development.json b/Examples/dbcontext_01/appsettings.Development.json
deleted file mode 100644
index e203e940..00000000
--- a/Examples/dbcontext_01/appsettings.Development.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Debug",
-      "System": "Information",
-      "Microsoft": "Information"
-    }
-  }
-}
diff --git a/Examples/dbcontext_01/appsettings.json b/Examples/dbcontext_01/appsettings.json
deleted file mode 100644
index def9159a..00000000
--- a/Examples/dbcontext_01/appsettings.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}
diff --git a/Examples/dbcontext_01/dbcontext_01.csproj b/Examples/dbcontext_01/dbcontext_01.csproj
deleted file mode 100644
index 480916b7..00000000
--- a/Examples/dbcontext_01/dbcontext_01.csproj
+++ /dev/null
@@ -1,19 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-  <PropertyGroup>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
-    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
-  </PropertyGroup>
-
-  <ItemGroup>
-	  <PackageReference Include="Microsoft.AspNetCore.App" />
-	  <PackageReference Include="Swashbuckle.AspNetCore" Version="4.0.1" />
-	  <PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="4.0.1" />
-	  <PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.1" />
-  </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\FreeSql.DbContext\FreeSql.DbContext.csproj" />
-  </ItemGroup>
-
-</Project>
diff --git a/Examples/domain_01/Domains/MusicDomain.cs b/Examples/domain_01/Domains/MusicDomain.cs
deleted file mode 100644
index f666e245..00000000
--- a/Examples/domain_01/Domains/MusicDomain.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using domain_01.Entitys;
-using FreeSql;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace domain_01.Domains
-{
-    public class MusicDomain
-    {
-		GuidRepository<Singer> _singerRepostiry => g.orm.GetGuidRepository<Singer>();
-		GuidRepository<Album> _albumRepostiry => g.orm.GetGuidRepository<Album>();
-		GuidRepository<Song> _songRepostiry => g.orm.GetGuidRepository<Song>();
-		GuidRepository<AlbumSong> _albumSongRepostiry => g.orm.GetGuidRepository<AlbumSong>();
-
-		public void SaveSong() {
-
-		}
-	}
-}
diff --git a/Examples/domain_01/Entitys/Album.cs b/Examples/domain_01/Entitys/Album.cs
deleted file mode 100644
index 9221dd4f..00000000
--- a/Examples/domain_01/Entitys/Album.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace domain_01.Entitys
-{
-	/// <summary>
-	/// 专辑
-	/// </summary>
-	public class Album
-    {
-		public Guid Id { get; set; }
-
-		public string Name { get; set; }
-
-		public virtual ICollection<Song> Songs { get; set; }
-
-		public DateTime PublishTime { get; set; }
-	}
-}
diff --git a/Examples/domain_01/Entitys/AlbumSong.cs b/Examples/domain_01/Entitys/AlbumSong.cs
deleted file mode 100644
index ff08ccc4..00000000
--- a/Examples/domain_01/Entitys/AlbumSong.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using FreeSql.DataAnnotations;
-using System;
-
-namespace domain_01.Entitys {
-	public class AlbumSong {
-
-		public Guid AlbumId { get; set; }
-
-		public Guid SongId { get; set; }
-	}
-}
diff --git a/Examples/domain_01/Entitys/Singer.cs b/Examples/domain_01/Entitys/Singer.cs
deleted file mode 100644
index c51fadd9..00000000
--- a/Examples/domain_01/Entitys/Singer.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace domain_01.Entitys
-{
-	/// <summary>
-	/// 歌手
-	/// </summary>
-    public class Singer
-    {
-		public Guid Id { get; set; }
-
-		public string Nickname { get; set; }
-
-		public DateTime RegTime { get; set; } = DateTime.Now;
-	}
-}
diff --git a/Examples/domain_01/Entitys/Song.cs b/Examples/domain_01/Entitys/Song.cs
deleted file mode 100644
index dec4429a..00000000
--- a/Examples/domain_01/Entitys/Song.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-using FreeSql.DataAnnotations;
-using System;
-using System.Collections.Generic;
-
-namespace domain_01.Entitys {
-
-	/// <summary>
-	/// 歌曲
-	/// </summary>
-	public class Song {
-
-		public Guid Id { get; set; }
-
-		public Guid SingerId { get; set; }
-		public virtual Guid Singer { get; set; }
-
-		public string Name { get; set; }
-
-		public string Url { get; set; }
-
-		public virtual ICollection<Album> Albums { get; set; }
-
-		public DateTime RegTime { get; set; } = DateTime.Now;
-	}
-}
diff --git a/Examples/domain_01/Program.cs b/Examples/domain_01/Program.cs
deleted file mode 100644
index 87dd792e..00000000
--- a/Examples/domain_01/Program.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
-
-namespace domain_01 {
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            CreateWebHostBuilder(args).Build().Run();
-        }
-
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
-    }
-}
diff --git a/Examples/domain_01/Properties/launchSettings.json b/Examples/domain_01/Properties/launchSettings.json
deleted file mode 100644
index c671858d..00000000
--- a/Examples/domain_01/Properties/launchSettings.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:54379/",
-      "sslPort": 0
-    }
-  },
-  "profiles": {
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "repository_01": {
-      "commandName": "Project",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      },
-      "applicationUrl": "http://localhost:54383/"
-    }
-  }
-}
\ No newline at end of file
diff --git a/Examples/domain_01/Startup.cs b/Examples/domain_01/Startup.cs
deleted file mode 100644
index 044e7316..00000000
--- a/Examples/domain_01/Startup.cs
+++ /dev/null
@@ -1,60 +0,0 @@
-using FreeSql;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using Swashbuckle.AspNetCore.Swagger;
-using System;
-using System.Text;
-
-namespace domain_01 {
-	public class Startup {
-		public Startup(IConfiguration configuration, ILoggerFactory loggerFactory) {
-			Configuration = configuration;
-
-			g.orm = new FreeSql.FreeSqlBuilder()
-				.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Pooling=true;Max Pool Size=10")
-				.UseLogger(loggerFactory.CreateLogger<IFreeSql>())
-				.UseAutoSyncStructure(true)
-				.Build();
-		}
-
-		public IConfiguration Configuration { get; }
-
-		public void ConfigureServices(IServiceCollection services) {
-			services.AddSingleton<IFreeSql>(g.orm);
-
-			services.AddMvc();
-			services.AddSwaggerGen(options => {
-				options.SwaggerDoc("v1", new Info {
-					Version = "v1",
-					Title = "FreeSql.domain_01 API"
-				});
-				//options.IncludeXmlComments(xmlPath);
-			});
-		}
-
-		public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) {
-			Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
-			Console.OutputEncoding = Encoding.GetEncoding("GB2312");
-			Console.InputEncoding = Encoding.GetEncoding("GB2312");
-
-			loggerFactory.AddConsole(Configuration.GetSection("Logging"));
-			loggerFactory.AddDebug();
-
-			app.UseHttpMethodOverride(new HttpMethodOverrideOptions { FormFieldName = "X-Http-Method-Override" });
-			app.UseDeveloperExceptionPage();
-			app.UseMvc();
-
-			app.UseSwagger();
-			app.UseSwaggerUI(c => {
-				c.SwaggerEndpoint("/swagger/v1/swagger.json", "FreeSql.domain_01 API V1");
-			});
-		}
-	}
-}
-
-public static class g {
-	public static IFreeSql orm { get; set; }
-}
\ No newline at end of file
diff --git a/Examples/domain_01/appsettings.Development.json b/Examples/domain_01/appsettings.Development.json
deleted file mode 100644
index e203e940..00000000
--- a/Examples/domain_01/appsettings.Development.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Debug",
-      "System": "Information",
-      "Microsoft": "Information"
-    }
-  }
-}
diff --git a/Examples/domain_01/appsettings.json b/Examples/domain_01/appsettings.json
deleted file mode 100644
index def9159a..00000000
--- a/Examples/domain_01/appsettings.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}
diff --git a/Examples/domain_01/domain_01.csproj b/Examples/domain_01/domain_01.csproj
deleted file mode 100644
index e8ad20a8..00000000
--- a/Examples/domain_01/domain_01.csproj
+++ /dev/null
@@ -1,35 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-	<PropertyGroup>
-		<TargetFramework>netcoreapp2.1</TargetFramework>
-		<AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
-	</PropertyGroup>
-
-	<ItemGroup>
-		<PackageReference Include="Microsoft.AspNetCore.App" />
-		<PackageReference Include="Swashbuckle.AspNetCore" Version="4.0.1" />
-		<PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="4.0.1" />
-		<PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.1" />
-	</ItemGroup>
-
-	<ItemGroup>
-		<ProjectReference Include="..\..\FreeSql.Repository\FreeSql.Repository.csproj" />
-	</ItemGroup>
-
-	<ItemGroup>
-	  <Folder Include="Properties\" />
-	</ItemGroup>
-
-	<ItemGroup>
-	  <Compile Update="readmeDetail.xaml.cs">
-	    <SubType>Code</SubType>
-	  </Compile>
-	  <Compile Update="readmeMaster.xaml.cs">
-	    <SubType>Code</SubType>
-	  </Compile>
-	  <Compile Update="readmeMenuItem.cs">
-	    <SubType>Code</SubType>
-	  </Compile>
-	</ItemGroup>
-
-</Project>
diff --git a/Examples/domain_01/readme.md b/Examples/domain_01/readme.md
deleted file mode 100644
index 784648a5..00000000
--- a/Examples/domain_01/readme.md
+++ /dev/null
@@ -1,5 +0,0 @@
-## 示例项目 domain_01
-
-实体：Entitys
-
-领域：Domains
\ No newline at end of file
diff --git a/Examples/net461_console_01/App.config b/Examples/net461_console_01/App.config
deleted file mode 100644
index ff77f14f..00000000
--- a/Examples/net461_console_01/App.config
+++ /dev/null
@@ -1,70 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
-    </startup>
-  <runtime>
-    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-      <dependentAssembly>
-        <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.4.1" newVersion="4.0.4.1" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Runtime.InteropServices.RuntimeInformation" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.2.0" newVersion="4.0.2.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.IO.FileSystem" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.3.0" newVersion="4.0.3.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Security.Cryptography.Algorithms" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.3.0.0" newVersion="4.3.0.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.ValueTuple" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.3.0" newVersion="4.0.3.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Security.Cryptography.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.2.0" newVersion="4.0.2.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.IO.FileSystem.Primitives" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.3.0" newVersion="4.0.3.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Xml.ReaderWriter" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.1.1.0" newVersion="4.1.1.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.IO.Compression" publicKeyToken="b77a5c561934e089" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.2.0.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Threading.Tasks.Extensions" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.2.0.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Xml.XPath.XDocument" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.1.0.0" newVersion="4.1.0.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Runtime.Loader" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.1.0" newVersion="4.0.1.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Console" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.0.2.0" newVersion="4.0.2.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="System.Diagnostics.StackTrace" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.1.0.0" newVersion="4.1.0.0" />
-      </dependentAssembly>
-    </assemblyBinding>
-  </runtime>
-</configuration>
diff --git a/Examples/net461_console_01/Program.cs b/Examples/net461_console_01/Program.cs
deleted file mode 100644
index f43ca833..00000000
--- a/Examples/net461_console_01/Program.cs
+++ /dev/null
@@ -1,43 +0,0 @@
-using FreeSql.DataAnnotations;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace net46_console_01 {
-	class Program {
-		static void Main(string[] args) {
-
-			var orm = new FreeSql.FreeSqlBuilder()
-				.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Pooling=true;Max Pool Size=10")
-				//.UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10")
-				.UseAutoSyncStructure(true)
-				.UseConfigEntityFromDbFirst(true)
-				.Build();
-
-			var repos = orm.GetGuidRepository<Song22>();
-
-			var item = repos.Insert(new Song22());
-			Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(item));
-
-			item.Title = "xxx";
-			repos.Update(item);
-			Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(item));
-
-			Console.WriteLine(repos.UpdateDiy.Where(a => a.Id == item.Id).Set(a => a.Clicks + 1).ToSql());
-			repos.UpdateDiy.Where(a => a.Id == item.Id).Set(a => a.Clicks + 1).ExecuteAffrows();
-
-			item = repos.Find(item.Id);
-			Console.WriteLine(Newtonsoft.Json.JsonConvert.SerializeObject(item));
-		}
-	}
-
-	public class Song22 {
-
-		public Guid Id { get; set; }
-		public string Title { get; set; }
-
-		public int Clicks { get; set; } = 10;
-	}
-}
diff --git a/Examples/net461_console_01/Properties/AssemblyInfo.cs b/Examples/net461_console_01/Properties/AssemblyInfo.cs
deleted file mode 100644
index f0d414c9..00000000
--- a/Examples/net461_console_01/Properties/AssemblyInfo.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-using System.Reflection;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-
-// 有关程序集的一般信息由以下
-// 控制。更改这些特性值可修改
-// 与程序集关联的信息。
-[assembly: AssemblyTitle("net46_console_01")]
-[assembly: AssemblyDescription("")]
-[assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("")]
-[assembly: AssemblyProduct("net46_console_01")]
-[assembly: AssemblyCopyright("Copyright ©  2019")]
-[assembly: AssemblyTrademark("")]
-[assembly: AssemblyCulture("")]
-
-// 将 ComVisible 设置为 false 会使此程序集中的类型
-//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型
-//请将此类型的 ComVisible 特性设置为 true。
-[assembly: ComVisible(false)]
-
-// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
-[assembly: Guid("0637a778-338e-4096-b439-32b18306c75f")]
-
-// 程序集的版本信息由下列四个值组成: 
-//
-//      主版本
-//      次版本
-//      生成号
-//      修订号
-//
-// 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号
-// 方法是按如下所示使用“*”: :
-// [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Examples/net461_console_01/net461_console_01.csproj b/Examples/net461_console_01/net461_console_01.csproj
deleted file mode 100644
index 0b542f52..00000000
--- a/Examples/net461_console_01/net461_console_01.csproj
+++ /dev/null
@@ -1,284 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
-  <PropertyGroup>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>{0637A778-338E-4096-B439-32B18306C75F}</ProjectGuid>
-    <OutputType>Exe</OutputType>
-    <RootNamespace>net46_console_01</RootNamespace>
-    <AssemblyName>net46_console_01</AssemblyName>
-    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
-    <FileAlignment>512</FileAlignment>
-    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <Deterministic>true</Deterministic>
-    <TargetFrameworkProfile />
-    <NuGetPackageImportStamp>
-    </NuGetPackageImportStamp>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
-    <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="CSScriptLib, Version=1.0.6.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\CS-Script.Core.1.0.6\lib\netstandard2.0\CSScriptLib.dll</HintPath>
-    </Reference>
-    <Reference Include="Google.Protobuf, Version=3.5.1.0, Culture=neutral, PublicKeyToken=a7d26565bac4d604, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Google.Protobuf.3.5.1\lib\net45\Google.Protobuf.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.CodeAnalysis, Version=2.10.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.CodeAnalysis.Common.2.10.0\lib\netstandard1.3\Microsoft.CodeAnalysis.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.CodeAnalysis.CSharp, Version=2.10.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.CodeAnalysis.CSharp.2.10.0\lib\netstandard1.3\Microsoft.CodeAnalysis.CSharp.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.CodeAnalysis.CSharp.Scripting, Version=2.10.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.CodeAnalysis.CSharp.Scripting.2.10.0\lib\netstandard1.3\Microsoft.CodeAnalysis.CSharp.Scripting.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.CodeAnalysis.Scripting, Version=2.10.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.CodeAnalysis.Scripting.Common.2.10.0\lib\netstandard1.3\Microsoft.CodeAnalysis.Scripting.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.DotNet.PlatformAbstractions, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.DotNet.PlatformAbstractions.2.1.0\lib\net45\Microsoft.DotNet.PlatformAbstractions.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Caching.Abstractions, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Caching.Abstractions.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Caching.Abstractions.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Caching.Memory, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Caching.Memory.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Caching.Memory.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Configuration, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Configuration.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Configuration.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Configuration.Abstractions, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Configuration.Abstractions.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Configuration.Abstractions.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Configuration.Binder, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Configuration.Binder.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Configuration.Binder.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.DependencyInjection.Abstractions.2.1.0\lib\netstandard2.0\Microsoft.Extensions.DependencyInjection.Abstractions.dll</HintPath>
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-    <Reference Include="Microsoft.Extensions.DependencyModel, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.DependencyModel.2.1.0\lib\net451\Microsoft.Extensions.DependencyModel.dll</HintPath>
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-    <Reference Include="Microsoft.Extensions.Logging, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Logging.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Logging.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Logging.Abstractions, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Logging.Abstractions.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Logging.Abstractions.dll</HintPath>
-    </Reference>
-    <Reference Include="Microsoft.Extensions.Logging.Debug, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
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-    <Reference Include="Microsoft.Extensions.Options, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
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-    <Reference Include="Microsoft.Extensions.Primitives, Version=2.1.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Microsoft.Extensions.Primitives.2.1.0\lib\netstandard2.0\Microsoft.Extensions.Primitives.dll</HintPath>
-    </Reference>
-    <Reference Include="MySql.Data, Version=8.0.15.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MySql.Data.8.0.15\lib\net452\MySql.Data.dll</HintPath>
-    </Reference>
-    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Newtonsoft.Json.12.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
-    </Reference>
-    <Reference Include="Npgsql, Version=4.0.5.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Npgsql.4.0.5\lib\net451\Npgsql.dll</HintPath>
-    </Reference>
-    <Reference Include="Npgsql.LegacyPostgis, Version=4.0.5.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Npgsql.LegacyPostgis.4.0.5\lib\net45\Npgsql.LegacyPostgis.dll</HintPath>
-    </Reference>
-    <Reference Include="Oracle.ManagedDataAccess, Version=2.0.18.3, Culture=neutral, PublicKeyToken=89b483f429c47342, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\Oracle.ManagedDataAccess.Core.2.18.3\lib\netstandard2.0\Oracle.ManagedDataAccess.dll</HintPath>
-    </Reference>
-    <Reference Include="SafeObjectPool, Version=1.0.14.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\SafeObjectPool.1.0.14\lib\netstandard2.0\SafeObjectPool.dll</HintPath>
-    </Reference>
-    <Reference Include="System" />
-    <Reference Include="System.AppContext, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\System.AppContext.4.3.0\lib\net46\System.AppContext.dll</HintPath>
-      <Private>True</Private>
-      <Private>True</Private>
-    </Reference>
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-  </ItemGroup>
-  <ItemGroup>
-    <Compile Include="Program.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
-  </ItemGroup>
-  <ItemGroup>
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-    <None Include="packages.config" />
-  </ItemGroup>
-  <ItemGroup>
-    <Analyzer Include="..\..\packages\Microsoft.CodeAnalysis.Analyzers.2.6.1\analyzers\dotnet\cs\Microsoft.CodeAnalysis.Analyzers.dll" />
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-  <ItemGroup>
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-      <Project>{ac47670e-90bb-4502-9965-0739bdf6fe2e}</Project>
-      <Name>FreeSql.Repository</Name>
-    </ProjectReference>
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-      <Name>FreeSql</Name>
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-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>这台计算机上缺少此项目引用的 NuGet 程序包。使用“NuGet 程序包还原”可下载这些程序包。有关更多信息，请参见 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。</ErrorText>
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diff --git a/Examples/net461_console_01/packages.config b/Examples/net461_console_01/packages.config
deleted file mode 100644
index 7d9b1e8f..00000000
--- a/Examples/net461_console_01/packages.config
+++ /dev/null
@@ -1,84 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="CS-Script.Core" version="1.0.6" targetFramework="net461" />
-  <package id="FreeSql" version="0.1.11" targetFramework="net461" />
-  <package id="FreeSql.Repository" version="0.1.11" targetFramework="net461" />
-  <package id="Google.Protobuf" version="3.5.1" targetFramework="net461" />
-  <package id="Microsoft.CodeAnalysis.Analyzers" version="2.6.1" targetFramework="net461" developmentDependency="true" />
-  <package id="Microsoft.CodeAnalysis.Common" version="2.10.0" targetFramework="net461" />
-  <package id="Microsoft.CodeAnalysis.CSharp" version="2.10.0" targetFramework="net461" />
-  <package id="Microsoft.CodeAnalysis.CSharp.Scripting" version="2.10.0" targetFramework="net461" />
-  <package id="Microsoft.CodeAnalysis.Scripting.Common" version="2.10.0" targetFramework="net461" />
-  <package id="Microsoft.CSharp" version="4.5.0" targetFramework="net461" />
-  <package id="Microsoft.DotNet.PlatformAbstractions" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Caching.Abstractions" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Caching.Memory" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Configuration" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Configuration.Abstractions" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Configuration.Binder" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.DependencyInjection.Abstractions" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.DependencyModel" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Logging" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Logging.Abstractions" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Logging.Debug" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Options" version="2.1.0" targetFramework="net461" />
-  <package id="Microsoft.Extensions.Primitives" version="2.1.0" targetFramework="net461" />
-  <package id="MySql.Data" version="8.0.15" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net461" />
-  <package id="Npgsql" version="4.0.5" targetFramework="net461" />
-  <package id="Npgsql.LegacyPostgis" version="4.0.5" targetFramework="net461" />
-  <package id="Oracle.ManagedDataAccess.Core" version="2.18.3" targetFramework="net461" />
-  <package id="SafeObjectPool" version="1.0.14" targetFramework="net461" />
-  <package id="System.AppContext" version="4.3.0" targetFramework="net461" />
-  <package id="System.Buffers" version="4.4.0" targetFramework="net461" />
-  <package id="System.Collections" version="4.3.0" targetFramework="net461" />
-  <package id="System.Collections.Concurrent" version="4.3.0" targetFramework="net461" />
-  <package id="System.Collections.Immutable" version="1.5.0" targetFramework="net461" />
-  <package id="System.Console" version="4.3.0" targetFramework="net461" />
-  <package id="System.Data.SqlClient" version="4.6.0" targetFramework="net461" />
-  <package id="System.Data.SQLite.Core" version="1.0.110.0" targetFramework="net461" />
-  <package id="System.Diagnostics.Debug" version="4.3.0" targetFramework="net461" />
-  <package id="System.Diagnostics.FileVersionInfo" version="4.3.0" targetFramework="net461" />
-  <package id="System.Diagnostics.StackTrace" version="4.3.0" targetFramework="net461" />
-  <package id="System.Diagnostics.Tools" version="4.3.0" targetFramework="net461" />
-  <package id="System.Dynamic.Runtime" version="4.3.0" targetFramework="net461" />
-  <package id="System.Globalization" version="4.3.0" targetFramework="net461" />
-  <package id="System.IO" version="4.3.0" targetFramework="net461" />
-  <package id="System.IO.Compression" version="4.3.0" targetFramework="net461" />
-  <package id="System.IO.FileSystem" version="4.3.0" targetFramework="net461" />
-  <package id="System.IO.FileSystem.Primitives" version="4.3.0" targetFramework="net461" />
-  <package id="System.Linq" version="4.3.0" targetFramework="net461" />
-  <package id="System.Linq.Expressions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Memory" version="4.5.2" targetFramework="net461" />
-  <package id="System.Numerics.Vectors" version="4.4.0" targetFramework="net461" />
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-  <package id="System.Reflection.Metadata" version="1.6.0" targetFramework="net461" />
-  <package id="System.Resources.ResourceManager" version="4.3.0" targetFramework="net461" />
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-  <package id="System.Runtime.Loader" version="4.3.0" targetFramework="net461" />
-  <package id="System.Runtime.Numerics" version="4.3.0" targetFramework="net461" />
-  <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net461" />
-  <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net461" />
-  <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net461" />
-  <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net461" />
-  <package id="System.Text.Encoding" version="4.3.0" targetFramework="net461" />
-  <package id="System.Text.Encoding.CodePages" version="4.3.0" targetFramework="net461" />
-  <package id="System.Text.Encoding.Extensions" version="4.3.0" targetFramework="net461" />
-  <package id="System.Threading" version="4.3.0" targetFramework="net461" />
-  <package id="System.Threading.Tasks" version="4.3.0" targetFramework="net461" />
-  <package id="System.Threading.Tasks.Extensions" version="4.5.2" targetFramework="net461" />
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-  <package id="System.Xml.XPath.XDocument" version="4.3.0" targetFramework="net461" />
-</packages>
\ No newline at end of file
diff --git a/Examples/repository_01/Controllers/SongController.cs b/Examples/repository_01/Controllers/SongController.cs
deleted file mode 100644
index d162c33c..00000000
--- a/Examples/repository_01/Controllers/SongController.cs
+++ /dev/null
@@ -1,98 +0,0 @@
-using FreeSql;
-using Microsoft.AspNetCore.Mvc;
-using restful.Entitys;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace restful.Controllers {
-
-	public class SongRepository : GuidRepository<Song> {
-		public SongRepository(IFreeSql fsql) : base(fsql) {
-		}
-	}
-
-	[Route("restapi/[controller]")]
-	public class SongsController : Controller {
-
-		BaseRepository<Song, int> _songRepository;
-
-		public class xxxx {
-			public int Id { get; set; }
-
-			public bool IsDeleted { get; set; }
-		}
-
-		
-
-		public SongsController(IFreeSql fsql,
-			GuidRepository<Song> repos1,
-			GuidRepository<xxxx> repos2,
-
-			DefaultRepository<Song, int> repos11,
-			DefaultRepository<xxxx, int> repos21,
-
-			BaseRepository<Song> repos3, BaseRepository<Song, int> repos4,
-			IBasicRepository<Song> repos31, IBasicRepository<Song, int> repos41,
-			IReadOnlyRepository<Song> repos311, IReadOnlyRepository<Song, int> repos411,
-
-			SongRepository reposSong
-			) {
-			_songRepository = repos4;
-
-			//test code
-			var curd1 = fsql.GetRepository<Song, int>();
-			var curd2 = fsql.GetRepository<Song, string>();
-			var curd3 = fsql.GetRepository<Song, Guid>();
-			var curd4 = fsql.GetGuidRepository<Song>();
-
-			Console.WriteLine(repos1.Select.ToSql());
-			Console.WriteLine(reposSong.Select.ToSql());
-
-			Console.WriteLine(repos2.Select.ToSql());
-			Console.WriteLine(repos21.Select.ToSql());
-
-			using (reposSong.DataFilter.DisableAll()) {
-				Console.WriteLine(reposSong.Select.ToSql());
-			}
-		}
-
-		[HttpGet]
-		public Task<List<Song>> GetItems([FromQuery] string key, [FromQuery] int page = 1, [FromQuery] int limit = 20) {
-			return _songRepository.Select.WhereIf(!string.IsNullOrEmpty(key), a => a.Title.Contains(key)).Page(page, limit).ToListAsync();
-		}
-
-		[HttpGet("{id}")]
-		public Task<Song> GetItem([FromRoute] int id) {
-			return _songRepository.FindAsync(id);
-		}
-
-		public class ModelSong {
-			public string title { get; set; }
-		}
-
-		[HttpPost, ProducesResponseType(201)]
-		public Task<Song> Create([FromBody] ModelSong model) {
-			return _songRepository.InsertAsync(new Song { Title = model.title });
-		}
-
-		[HttpPut("{id}")]
-		public Task Update([FromRoute] int id, [FromBody] ModelSong model) {
-			return _songRepository.UpdateAsync(new Song { Id = id, Title = model.title });
-		}
-
-		[HttpPatch("{id}")]
-		async public Task<Song> UpdateDiy([FromRoute] int id, [FromForm] string title) {
-			var up = _songRepository.UpdateDiy.Where(a => a.Id == id);
-			if (!string.IsNullOrEmpty(title)) up.Set(a => a.Title, title);
-			var ret = await up.ExecuteUpdatedAsync();
-			return ret.FirstOrDefault();
-		}
-
-		[HttpDelete("{id}"), ProducesResponseType(204)]
-		public Task Delete([FromRoute] int id) {
-			return _songRepository.DeleteAsync(a => a.Id == id);
-		}
-	}
-}
diff --git a/Examples/repository_01/Entitys/Song.cs b/Examples/repository_01/Entitys/Song.cs
deleted file mode 100644
index 8c8a8a14..00000000
--- a/Examples/repository_01/Entitys/Song.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using FreeSql.DataAnnotations;
-using repository_01;
-
-namespace restful.Entitys {
-	public class Song {
-
-		[Column(IsIdentity = true)]
-		public int Id { get; set; }
-		public string Title { get; set; }
-	}
-}
diff --git a/Examples/repository_01/Program.cs b/Examples/repository_01/Program.cs
deleted file mode 100644
index da7591b3..00000000
--- a/Examples/repository_01/Program.cs
+++ /dev/null
@@ -1,24 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
-
-namespace repository_01
-{
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            CreateWebHostBuilder(args).Build().Run();
-        }
-
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
-    }
-}
diff --git a/Examples/repository_01/Properties/launchSettings.json b/Examples/repository_01/Properties/launchSettings.json
deleted file mode 100644
index 0426ce6f..00000000
--- a/Examples/repository_01/Properties/launchSettings.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:52751/",
-      "sslPort": 0
-    }
-  },
-  "profiles": {
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "repository_01": {
-      "commandName": "Project",
-      "launchBrowser": true,
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      },
-      "applicationUrl": "http://localhost:52752/"
-    }
-  }
-}
\ No newline at end of file
diff --git a/Examples/repository_01/Startup.cs b/Examples/repository_01/Startup.cs
deleted file mode 100644
index dab5e76c..00000000
--- a/Examples/repository_01/Startup.cs
+++ /dev/null
@@ -1,116 +0,0 @@
-using Autofac;
-using Autofac.Extensions.DependencyInjection;
-using FreeSql;
-using FreeSql.DataAnnotations;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using restful.Entitys;
-using Swashbuckle.AspNetCore.Swagger;
-using System;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-
-namespace repository_01 {
-
-	/// <summary>
-	/// 用户密码信息
-	/// </summary>
-	public class Sys1UserLogOn {
-		[Column(IsPrimary = true, Name = "Id")]
-		public Guid UserLogOnId { get; set; }
-		public virtual Sys1User User { get; set; }
-	}
-	public class Sys1User {
-		[Column(IsPrimary = true, Name = "Id")]
-		public Guid UserId { get; set; }
-		public virtual Sys1UserLogOn UserLogOn { get; set; }
-	}
-	
-	public class Startup {
-		public Startup(IConfiguration configuration, ILoggerFactory loggerFactory) {
-			Configuration = configuration;
-
-			Fsql = new FreeSql.FreeSqlBuilder()
-				.UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Pooling=true;Max Pool Size=10")
-				.UseLogger(loggerFactory.CreateLogger<IFreeSql>())
-				.UseAutoSyncStructure(true)
-				.UseLazyLoading(true)
-
-				.UseMonitorCommand(cmd => Trace.WriteLine(cmd.CommandText))
-				.Build();
-
-			var sysu = new Sys1User { };
-			Fsql.Insert<Sys1User>().AppendData(sysu).ExecuteAffrows();
-			Fsql.Insert<Sys1UserLogOn>().AppendData(new Sys1UserLogOn { UserLogOnId = sysu.UserId }).ExecuteAffrows();
-			var a = Fsql.Select<Sys1UserLogOn>().ToList();
-			var b = Fsql.Select<Sys1UserLogOn>().Any();
-		}
-
-		public IConfiguration Configuration { get; }
-		public static IFreeSql Fsql { get; private set; }
-
-		public void ConfigureServices(IServiceCollection services) {
-
-			//services.AddTransient(s => s.)
-
-			services.AddMvc();
-			services.AddSwaggerGen(options => {
-				options.SwaggerDoc("v1", new Info {
-					Version = "v1",
-					Title = "FreeSql.RESTful API"
-				});
-				//options.IncludeXmlComments(xmlPath);
-			});
-
-			services.AddSingleton<IFreeSql>(Fsql);
-
-			services.AddFreeRepository(filter => filter
-				//.Apply<Song>("test", a => a.Title == DateTime.Now.ToString() + System.Threading.Thread.CurrentThread.ManagedThreadId)
-				.Apply<ISoftDelete>("softdelete", a => a.IsDeleted == false)
-				,
-				this.GetType().Assembly
-			);
-
-
-			//var builder = new ContainerBuilder();
-
-			//builder.RegisterFreeRepository(filter => filter
-			//	//.Apply<Song>("test", a => a.Title == DateTime.Now.ToString() + System.Threading.Thread.CurrentThread.ManagedThreadId)
-			//	.Apply<ISoftDelete>("softdelete", a => a.IsDeleted == false)
-			//	,
-			//	this.GetType().Assembly
-			//);
-
-			//builder.Populate(services);
-			//var container = builder.Build();
-
-			//return new AutofacServiceProvider(container);
-		}
-
-		public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) {
-			Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
-			Console.OutputEncoding = Encoding.GetEncoding("GB2312");
-			Console.InputEncoding = Encoding.GetEncoding("GB2312");
-
-			loggerFactory.AddConsole(Configuration.GetSection("Logging"));
-			loggerFactory.AddDebug();
-
-			app.UseHttpMethodOverride(new HttpMethodOverrideOptions { FormFieldName = "X-Http-Method-Override" });
-			app.UseDeveloperExceptionPage();
-			app.UseMvc();
-
-			app.UseSwagger();
-			app.UseSwaggerUI(c => {
-				c.SwaggerEndpoint("/swagger/v1/swagger.json", "FreeSql.RESTful API V1");
-			});
-		}
-	}
-
-	public interface ISoftDelete {
-		bool IsDeleted { get; set; }
-	}
-}
diff --git a/Examples/repository_01/appsettings.Development.json b/Examples/repository_01/appsettings.Development.json
deleted file mode 100644
index 86f6b8f7..00000000
--- a/Examples/repository_01/appsettings.Development.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "Logging": {
-	"LogLevel": {
-		"Default": "Debug",
-		"System": "Warning",
-		"Microsoft": "Warning"
-	}
-  }
-}
diff --git a/Examples/repository_01/appsettings.json b/Examples/repository_01/appsettings.json
deleted file mode 100644
index def9159a..00000000
--- a/Examples/repository_01/appsettings.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "Logging": {
-    "LogLevel": {
-      "Default": "Warning"
-    }
-  },
-  "AllowedHosts": "*"
-}
diff --git a/Examples/repository_01/repository_01.csproj b/Examples/repository_01/repository_01.csproj
deleted file mode 100644
index 7ac6fd4d..00000000
--- a/Examples/repository_01/repository_01.csproj
+++ /dev/null
@@ -1,19 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
-
-	<PropertyGroup>
-		<TargetFramework>netcoreapp2.1</TargetFramework>
-		<AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
-	</PropertyGroup>
-
-	<ItemGroup>
-		<PackageReference Include="Microsoft.AspNetCore.App" />
-		<PackageReference Include="Swashbuckle.AspNetCore" Version="4.0.1" />
-		<PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="4.0.1" />
-		<PackageReference Include="System.Text.Encoding.CodePages" Version="4.5.1" />
-	</ItemGroup>
-
-	<ItemGroup>
-		<ProjectReference Include="..\..\FreeSql.Repository\FreeSql.Repository.csproj" />
-	</ItemGroup>
-
-</Project>
diff --git a/FreeSql.Repository/FreeSql.Repository.csproj b/FreeSql.Repository/FreeSql.Repository.csproj
deleted file mode 100644
index 77078e8b..00000000
--- a/FreeSql.Repository/FreeSql.Repository.csproj
+++ /dev/null
@@ -1,17 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-	<PropertyGroup>
-		<TargetFramework>netstandard2.0</TargetFramework>
-		<Version>0.4.11</Version>
-		<Authors>YeXiangQin</Authors>
-		<Description>FreeSql Implementation of General Repository, Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite, and read/write separation、and split table.</Description>
-		<PackageProjectUrl>https://github.com/2881099/FreeSql/wiki/Repository</PackageProjectUrl>
-		<PackageTags>FreeSql ORM Repository</PackageTags>
-		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-	</PropertyGroup>
-
-	<ItemGroup>
-		<PackageReference Include="FreeSql.DbContext" Version="0.4.10" />
-	</ItemGroup>
-
-</Project>
diff --git a/FreeSql.Tests/FreeSql.Tests.csproj b/FreeSql.Tests/FreeSql.Tests.csproj
index 30abb7c1..78b3314d 100644
--- a/FreeSql.Tests/FreeSql.Tests.csproj
+++ b/FreeSql.Tests/FreeSql.Tests.csproj
@@ -7,13 +7,13 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="FreeSql.Repository" Version="0.4.11" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
     <PackageReference Include="xunit" Version="2.4.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.0" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\FreeSql.Repository\FreeSql.Repository.csproj" />
     <ProjectReference Include="..\FreeSql\FreeSql.csproj" />
   </ItemGroup>
 
diff --git a/FreeSql.sln b/FreeSql.sln
index 62ad8664..87e56fa9 100644
--- a/FreeSql.sln
+++ b/FreeSql.sln
@@ -22,14 +22,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "restful", "Examples\restful
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "efcore_to_freesql", "Examples\efcore_to_freesql\efcore_to_freesql.csproj", "{B93981B8-3295-4EDD-B314-BCA77B6BF37A}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FreeSql.Repository", "FreeSql.Repository\FreeSql.Repository.csproj", "{AC47670E-90BB-4502-9965-0739BDF6FE2E}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "repository_01", "Examples\repository_01\repository_01.csproj", "{C9940A46-D265-4088-9561-5A42ACEDA7AE}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "domain_01", "Examples\domain_01\domain_01.csproj", "{A23D0455-CA7B-442D-827E-C4C7E84F9084}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "net461_console_01", "Examples\net461_console_01\net461_console_01.csproj", "{0637A778-338E-4096-B439-32B18306C75F}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "orm_vs", "Examples\orm_vs\orm_vs.csproj", "{1A5EC2EB-8C2B-4547-8AC6-EB5C0DE0CA81}"
 EndProject
 Global
@@ -114,54 +106,6 @@ Global
 		{B93981B8-3295-4EDD-B314-BCA77B6BF37A}.Release|x64.Build.0 = Release|Any CPU
 		{B93981B8-3295-4EDD-B314-BCA77B6BF37A}.Release|x86.ActiveCfg = Release|Any CPU
 		{B93981B8-3295-4EDD-B314-BCA77B6BF37A}.Release|x86.Build.0 = Release|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Debug|x64.Build.0 = Debug|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Debug|x86.Build.0 = Debug|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Release|Any CPU.Build.0 = Release|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Release|x64.ActiveCfg = Release|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Release|x64.Build.0 = Release|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Release|x86.ActiveCfg = Release|Any CPU
-		{AC47670E-90BB-4502-9965-0739BDF6FE2E}.Release|x86.Build.0 = Release|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Debug|x64.Build.0 = Debug|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Debug|x86.Build.0 = Debug|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Release|Any CPU.Build.0 = Release|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Release|x64.ActiveCfg = Release|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Release|x64.Build.0 = Release|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Release|x86.ActiveCfg = Release|Any CPU
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE}.Release|x86.Build.0 = Release|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Debug|x64.Build.0 = Debug|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Debug|x86.Build.0 = Debug|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Release|Any CPU.Build.0 = Release|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Release|x64.ActiveCfg = Release|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Release|x64.Build.0 = Release|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Release|x86.ActiveCfg = Release|Any CPU
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084}.Release|x86.Build.0 = Release|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Debug|x64.ActiveCfg = Debug|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Debug|x64.Build.0 = Debug|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Debug|x86.ActiveCfg = Debug|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Debug|x86.Build.0 = Debug|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Release|Any CPU.Build.0 = Release|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Release|x64.ActiveCfg = Release|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Release|x64.Build.0 = Release|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Release|x86.ActiveCfg = Release|Any CPU
-		{0637A778-338E-4096-B439-32B18306C75F}.Release|x86.Build.0 = Release|Any CPU
 		{1A5EC2EB-8C2B-4547-8AC6-EB5C0DE0CA81}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{1A5EC2EB-8C2B-4547-8AC6-EB5C0DE0CA81}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{1A5EC2EB-8C2B-4547-8AC6-EB5C0DE0CA81}.Debug|x64.ActiveCfg = Debug|Any CPU
@@ -181,9 +125,6 @@ Global
 	GlobalSection(NestedProjects) = preSolution
 		{83D10565-AF9D-4EDC-8FB8-8C962A843F97} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
 		{B93981B8-3295-4EDD-B314-BCA77B6BF37A} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
-		{C9940A46-D265-4088-9561-5A42ACEDA7AE} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
-		{A23D0455-CA7B-442D-827E-C4C7E84F9084} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
-		{0637A778-338E-4096-B439-32B18306C75F} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
 		{1A5EC2EB-8C2B-4547-8AC6-EB5C0DE0CA81} = {94C8A78D-AA15-47B2-A348-530CD86BFC1B}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
diff --git a/FreeSql/FreeSql.csproj b/FreeSql/FreeSql.csproj
index 56b6d4b0..fcaf330c 100644
--- a/FreeSql/FreeSql.csproj
+++ b/FreeSql/FreeSql.csproj
@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFramework>netstandard2.0</TargetFramework>
-		<Version>0.4.11</Version>
+		<Version>0.4.12</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql is the most convenient ORM in dotnet. It supports Mysql, Postgresql, SqlServer, Oracle and Sqlite.</Description>