diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index d198eb6c..ab4c3bf2 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -130,6 +130,13 @@
             清空状态数据
             </summary>
         </member>
+        <member name="M:FreeSql.DbSet`1.RemoveAsync(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
+            <summary>
+            根据 lambda 条件删除数据
+            </summary>
+            <param name="predicate"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.DbSet`1.Add(`0)">
             <summary>
             添加
diff --git a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/MySqlCodeFirstTest.cs b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/MySqlCodeFirstTest.cs
index 3be75126..e269e7e0 100644
--- a/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/MySqlCodeFirstTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests.Provider.Odbc/MySql/MySqlCodeFirstTest.cs
@@ -10,6 +10,85 @@ namespace FreeSql.Tests.Odbc.MySql
 {
     public class MySqlCodeFirstTest
     {
+        [Fact]
+        public void EnumStartValue1()
+        {
+            var fsql = g.mysql;
+            fsql.Delete<TS_ESV1>().Where("1=1").ExecuteAffrows();
+
+            var repo = fsql.GetRepository<TS_ESV1>();
+            var item1 = repo.Insert(new TS_ESV1 { Status = TS_TSV1_Status.Status1 });
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status1' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status1).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status2' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status2).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status3' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status3).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status1' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status1).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status2' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status2).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status3' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status3).ToSql().Replace("\r\n", ""));
+
+            item1.Status = TS_TSV1_Status.Status1;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status2;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status3;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status3;
+            fsql.GetRepository<TS_ESV1>().Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status2;
+            fsql.GetRepository<TS_ESV1>().Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+        }
+        public class TS_ESV1
+        {
+            public Guid Id { get; set; }
+            public TS_TSV1_Status Status { get; set; }
+        }
+        public enum TS_TSV1_Status
+        {
+            Status1 = 1,
+            Status2 = 3,
+            Status3 = 5
+        }
+
         [Fact]
         public void StringLength()
         {
diff --git a/FreeSql.Tests/FreeSql.Tests/MySql/MySqlCodeFirstTest.cs b/FreeSql.Tests/FreeSql.Tests/MySql/MySqlCodeFirstTest.cs
index e018ae54..43501614 100644
--- a/FreeSql.Tests/FreeSql.Tests/MySql/MySqlCodeFirstTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/MySql/MySqlCodeFirstTest.cs
@@ -11,6 +11,85 @@ namespace FreeSql.Tests.MySql
 {
     public class MySqlCodeFirstTest
     {
+        [Fact]
+        public void EnumStartValue1()
+        {
+            var fsql = g.mysql;
+            fsql.Delete<TS_ESV1>().Where("1=1").ExecuteAffrows();
+
+            var repo = fsql.GetRepository<TS_ESV1>();
+            var item1 = repo.Insert(new TS_ESV1 { Status = TS_TSV1_Status.Status1 });
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status1' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status1).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status2' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status2).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status3' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status3).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status1' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status1).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status2' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status2).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE `TS_ESV1` SET `Status` = 'Status3' WHERE (`Id` = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status3).ToSql().Replace("\r\n", ""));
+
+            item1.Status = TS_TSV1_Status.Status1;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status2;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status3;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status3;
+            fsql.GetRepository<TS_ESV1>().Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status2;
+            fsql.GetRepository<TS_ESV1>().Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+        }
+        public class TS_ESV1
+        {
+            public Guid Id { get; set; }
+            public TS_TSV1_Status Status { get; set; }
+        }
+        public enum TS_TSV1_Status
+        {
+            Status1 = 1,
+            Status2 = 3,
+            Status3 = 5
+        }
+
         [Fact]
         public void DateTime_1()
         {
diff --git a/FreeSql.Tests/FreeSql.Tests/SqlServer/SqlServerCodeFirstTest.cs b/FreeSql.Tests/FreeSql.Tests/SqlServer/SqlServerCodeFirstTest.cs
index 34c6c2e4..fac3b6e9 100644
--- a/FreeSql.Tests/FreeSql.Tests/SqlServer/SqlServerCodeFirstTest.cs
+++ b/FreeSql.Tests/FreeSql.Tests/SqlServer/SqlServerCodeFirstTest.cs
@@ -12,6 +12,85 @@ namespace FreeSql.Tests.SqlServer
 {
     public class SqlServerCodeFirstTest
     {
+        [Fact] 
+        public void EnumStartValue1()
+        {
+            var fsql = g.sqlserver;
+            fsql.Delete<TS_ESV1>().Where("1=1").ExecuteAffrows();
+
+            var repo = fsql.GetRepository<TS_ESV1>();
+            var item1 = repo.Insert(new TS_ESV1 { Status = TS_TSV1_Status.Status1 });
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            Assert.Equal($"UPDATE [TS_ESV1] SET [Status] = 1 WHERE ([Id] = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status1).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE [TS_ESV1] SET [Status] = 3 WHERE ([Id] = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status2).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE [TS_ESV1] SET [Status] = 5 WHERE ([Id] = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status, TS_TSV1_Status.Status3).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE [TS_ESV1] SET [Status] = 1 WHERE ([Id] = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status1).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE [TS_ESV1] SET [Status] = 3 WHERE ([Id] = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status2).ToSql().Replace("\r\n", ""));
+            Assert.Equal($"UPDATE [TS_ESV1] SET [Status] = 5 WHERE ([Id] = '{item1.Id}')", fsql.Update<TS_ESV1>().Where(a => a.Id == item1.Id).NoneParameter().Set(a => a.Status == TS_TSV1_Status.Status3).ToSql().Replace("\r\n", ""));
+
+            item1.Status = TS_TSV1_Status.Status1;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status1, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status2;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status3;
+            repo.Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status3;
+            fsql.GetRepository<TS_ESV1>().Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status3, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+
+            item1.Status = TS_TSV1_Status.Status2;
+            fsql.GetRepository<TS_ESV1>().Update(item1);
+            Assert.True(fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, fsql.Select<TS_ESV1>().Where(a => a.Id == item1.Id).First(a => a.Status));
+            Assert.True(repo.Select.Where(a => a.Id == item1.Id).Any());
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First().Status);
+            Assert.Equal(TS_TSV1_Status.Status2, repo.Select.Where(a => a.Id == item1.Id).First(a => a.Status));
+        }
+        public class TS_ESV1
+        {
+            public Guid Id { get; set; }
+            public TS_TSV1_Status Status { get; set; }
+        }
+        public enum TS_TSV1_Status
+        {
+            Status1 = 1,
+            Status2 = 3,
+            Status3 = 5
+        }
+
         [Fact]
         public void Blob()
         {
diff --git a/FreeSql.Tests/FreeSql.Tests/g.cs b/FreeSql.Tests/FreeSql.Tests/g.cs
index 533be9f6..43f83258 100644
--- a/FreeSql.Tests/FreeSql.Tests/g.cs
+++ b/FreeSql.Tests/FreeSql.Tests/g.cs
@@ -42,12 +42,7 @@ public class g
 
     static Lazy<IFreeSql> sqlserverLazy = new Lazy<IFreeSql>(() => new FreeSql.FreeSqlBuilder()
         .UseConnectionString(FreeSql.DataType.SqlServer, "Data Source=.;Integrated Security=True;Initial Catalog=freesqlTest;Pooling=true;Max Pool Size=3")
-        //.UseConnectionFactory(FreeSql.DataType.SqlServer, () => new Microsoft.Data.SqlClient.SqlConnection("Data Source=.;Integrated Security=True;Initial Catalog=freesqlTest;Pooling=true;"))
-        //.UseConnectionFactory(FreeSql.DataType.SqlServer, () => new System.Data.SqlClient.SqlConnection("Data Source=.;Integrated Security=True;Initial Catalog=freesqlTest;Pooling=true;"))
-        //.UseConnectionString(FreeSql.DataType.SqlServer, "Data Source=192.168.164.129;uid=sa;pwd=123456;Initial Catalog=ds_shop;Pooling=true;Max Pool Size=3")
-        //.UseConnectionFactory(FreeSql.DataType.SqlServer, () => new System.Data.SqlClient.SqlConnection("Data Source=192.168.164.129;uid=sa;pwd=123456;Initial Catalog=ds_shop;Pooling=true;"))
         .UseAutoSyncStructure(true)
-        //.UseGenerateCommandParameterWithLambda(true)
         .UseMonitorCommand(
             cmd => Trace.WriteLine("\r\n线程" + Thread.CurrentThread.ManagedThreadId + ": " + cmd.CommandText) //监听SQL命令对象，在执行前
             //, (cmd, traceLog) => Console.WriteLine(traceLog)
diff --git a/FreeSql/Extensions/FreeSqlGlobalExtensions.cs b/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
index c4534b31..7925f280 100644
--- a/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
+++ b/FreeSql/Extensions/FreeSqlGlobalExtensions.cs
@@ -163,7 +163,11 @@ public static partial class FreeSqlGlobalExtensions
         var dict = new Dictionary<string, PropertyInfo>(StringComparer.CurrentCultureIgnoreCase);
         foreach (var prop in props)
         {
-            if (dict.ContainsKey(prop.Name)) continue;
+            if (dict.TryGetValue(prop.Name, out var existsProp))
+            {
+                if (existsProp.DeclaringType != prop) dict[prop.Name] = prop;
+                continue;
+            }
             dict.Add(prop.Name, prop);
         }
         return dict;