## v0.4.12

- 增加 .First()/.FirstAsync() 指定字段查询的重载方法 #26；
- 调整 FreeSql.Repository 直接引用 FreeSql.DbContext 内的仓储实现；
- 移动 FreeSql.Repository 至 FreeSql.DbContext；
- 补充 单独针对 MySql 枚举类型的单元测试；

Examples/dbcontext_01/Program.cs

@@ -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>();
-    }
-}