- 补充 同线程时间 fsql.Transaction 事务等级参数的传入；

FreeSql/FreeSql.xml

@@ -1960,10 +1960,18 @@
             </summary>
             <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
         </member>
-        <member name="M:FreeSql.IAdo.Transaction(System.Action,System.TimeSpan)">
+        <member name="M:FreeSql.IAdo.Transaction(System.TimeSpan,System.Action)">
             <summary>
             撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>
             </summary>
+            <param name="timeout">頞<EFBFBD>𧒄嚗峕𧊋<EFBFBD>扯<EFBFBD>摰<EFBFBD><EFBFBD><EFBFBD>芸𢆡<EFBFBD>𣂷漱</param>
+            <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
+        </member>
+        <member name="M:FreeSql.IAdo.Transaction(System.Data.IsolationLevel,System.TimeSpan,System.Action)">
+            <summary>
+            撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>
+            </summary>
+            <param name="isolationLevel"></param>
             <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
             <param name="timeout">頞<EFBFBD>𧒄嚗峕𧊋<EFBFBD>扯<EFBFBD>摰<EFBFBD><EFBFBD><EFBFBD>芸𢆡<EFBFBD>𣂷漱</param>
         </member>
@@ -2256,187 +2264,7 @@
         </member>
         <member name="P:FreeSql.IAop.CurdAfter">
             <summary>
-            增删查改，执行命令完成后触发
-            </summary>
-        </member>
-        <member name="P:FreeSql.IAop.SyncStructureBefore">
-            <summary>
-            CodeFirst迁移，执行之前触发
-            </summary>
-        </member>
-        <member name="P:FreeSql.IAop.SyncStructureAfter">
-            <summary>
-            CodeFirst迁移，执行完成触发
-            </summary>
-        </member>
-        <member name="P:FreeSql.IAop.AuditValue">
-            <summary>
-            Insert/Update自动值处理
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ParseExpressionEventArgs.FreeParse">
-            <summary>
-            内置解析功能，可辅助您进行解析
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ParseExpressionEventArgs.Expression">
-            <summary>
-            需要您解析的表达式
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ParseExpressionEventArgs.Result">
-            <summary>
-            解析后的内容
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ConfigEntityEventArgs.EntityType">
-            <summary>
-            实体类型
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ConfigEntityEventArgs.ModifyResult">
-            <summary>
-            实体配置
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ConfigEntityEventArgs.ModifyIndexResult">
-            <summary>
-            索引配置
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ConfigEntityPropertyEventArgs.EntityType">
-            <summary>
-            实体类型
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ConfigEntityPropertyEventArgs.Property">
-            <summary>
-            实体的属性
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.ConfigEntityPropertyEventArgs.ModifyResult">
-            <summary>
-            实体的属性配置
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdBeforeEventArgs.Identifier">
-            <summary>
-            标识符，可将 CurdBefore 与 CurdAfter 进行匹配
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdBeforeEventArgs.CurdType">
-            <summary>
-            操作类型
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdBeforeEventArgs.EntityType">
-            <summary>
-            实体类型
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdBeforeEventArgs.Table">
-            <summary>
-            实体类型的元数据
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdBeforeEventArgs.Sql">
-            <summary>
-            执行的 SQL
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdBeforeEventArgs.DbParms">
-            <summary>
-            参数化命令
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdAfterEventArgs.Exception">
-            <summary>
-            发生的错误
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdAfterEventArgs.ExecuteResult">
-            <summary>
-            执行SQL命令，返回的结果
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdAfterEventArgs.ElapsedTicks">
-            <summary>
-            耗时（单位：Ticks）
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.CurdAfterEventArgs.ElapsedMilliseconds">
-            <summary>
-            耗时（单位：毫秒）
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.SyncStructureBeforeEventArgs.Identifier">
-            <summary>
-            标识符，可将 SyncStructureBeforeEventArgs 与 SyncStructureAfterEventArgs 进行匹配
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.SyncStructureBeforeEventArgs.EntityTypes">
-            <summary>
-            实体类型
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.SyncStructureAfterEventArgs.Sql">
-            <summary>
-            执行的 SQL
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.SyncStructureAfterEventArgs.Exception">
-            <summary>
-            发生的错误
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.SyncStructureAfterEventArgs.ElapsedTicks">
-            <summary>
-            耗时（单位：Ticks）
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.SyncStructureAfterEventArgs.ElapsedMilliseconds">
-            <summary>
-            耗时（单位：毫秒）
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.AuditValueEventArgs.AuditValueType">
-            <summary>
-            类型
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.AuditValueEventArgs.Column">
-            <summary>
-            属性列的元数据
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.AuditValueEventArgs.Property">
-            <summary>
-            反射的属性信息
-            </summary>
-        </member>
-        <member name="P:FreeSql.Aop.AuditValueEventArgs.Value">
-            <summary>
-            获取实体的属性值，也可以设置实体的属性新值
-            </summary>
-        </member>
-        <member name="P:FreeSql.ICodeFirst.IsAutoSyncStructure">
-            <summary>
-            【开发环境必备】自动同步实体结构到数据库，程序运行中检查实体表是否存在，然后创建或修改
-            </summary>
-        </member>
-        <member name="P:FreeSql.ICodeFirst.IsSyncStructureToLower">
-            <summary>
-            转小写同步结构
-            </summary>
-        </member>
-        <member name="P:FreeSql.ICodeFirst.IsSyncStructureToUpper">
-            <summary>
-            转大写同步结构
-            </summary>
-        </member>
-        <member name="P:FreeSql.ICodeFirst.IsConfigEntityFromDbFirst">
-            <summary>
-            将数据库的主键、自增、索引设置导入，适用 DbFirst 模式，无须在实体类型上设置 [Column(IsPrimary)] 或者 ConfigEntity。此功能目前可用于 mysql/sqlserver/postgresql/oracle。<para></para>
+         <EFBFBD>𤥁<EFBFBD><EFBFBD> ConfigEntity<74><79>迨<EFBFBD>蠘<EFBFBD><E8A098>桀<EFBFBD><E6A180>舐鍂鈭<E98D82> mysql/sqlserver/postgresql/oracle<6C><65><para></para>
             <20>砍<EFBFBD><E7A08D>賭<EFBFBD>敶勗<E695B6> IFreeSql 擐𡝗活霈輸䔮<E8BCB8><E494AE><EFBFBD>笔漲<E7AC94><E6BCB2><para></para>
             <20>乩蝙<E4B9A9><E89D99> CodeFirst <20>𥕦遣蝝Ｗ<E89D9D><EFBCB7>𠬍<EFBFBD><F0A0AC8D><EFBFBD>凒<EFBFBD>亙銁<E4BA99>唳旿摨㮖<E691A8>撱箔<E692B1>蝝Ｗ<E89D9D>嚗諹𥅾<E8ABB9>䭾𧋦<E4ADBE>蠘<EFBFBD>銝衤<E98A9D>甈<EFBFBD> CodeFirst 餈<>宏<EFBFBD>嗆㺭<E59786>桀<EFBFBD>銝𠰴<E98A9D>撱箇<E692B1>蝝Ｗ<E89D9D>撠<EFBFBD>◤<EFBFBD>𣳇膄
             </summary>
@@ -2970,10 +2798,163 @@
             </summary>
             <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
         </member>
-        <member name="M:IFreeSql.Transaction(System.Action,System.TimeSpan)">
+        <member name="M:IFreeSql.Transaction(System.TimeSpan,System.Action)">
             <summary>
             撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>
             </summary>
+            <param name="timeout">頞<EFBFBD>𧒄嚗峕𧊋<EFBFBD>扯<EFBFBD>摰<EFBFBD><EFBFBD><EFBFBD>芸𢆡<EFBFBD>𣂷漱</param>
+            <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
+        </member>
+        <member name="M:IFreeSql.Transaction(System.Data.IsolationLevel,System.TimeSpan,System.Action)">
+            <summary>
+            撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>
+     <20>
+            </summary>
+            <returns></returns>
+        </member>
+        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.And``1(System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}},System.Boolean,System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}})">
+            <summary>
+            雿輻鍂 and <20>潭𦻖銝支葵 lambda 銵刻噢撘<E599A2>
+            </summary>
+            <typeparam name="T"></typeparam>
+            <param name="exp1"></param>
+            <param name="condition">true <20>嗥<EFBFBD><E597A5><EFBFBD></param>
+            <param name="exp2"></param>
+            <returns></returns>
+        </member>
+        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.Or``1(System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}},System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}})">
+            <summary>
+            雿輻鍂 or <20>潭𦻖銝支葵 lambda 銵刻噢撘<E599A2>
+            </summary>
+            <returns></returns>
+        </member>
+        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.Or``1(System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}},System.Boolean,System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}})">
+            <summary>
+            雿輻鍂 or <20>潭𦻖銝支葵 lambda 銵刻噢撘<E599A2>
+            </summary>
+            <typeparam name="T"></typeparam>
+            <param name="exp1"></param>
+            <param name="condition">true <20>嗥<EFBFBD><E597A5><EFBFBD></param>
+            <param name="exp2"></param>
+            <returns></returns>
+        </member>
+        <member name="M:System.Linq.Expressions.LambadaExpressionExtensions.Not``1(System.Linq.Expressions.Expression{System.Func{``0,System.Boolean}},System.Boolean)">
+            <summary>
+            撠<> lambda 銵刻噢撘誩<E69298><E8AAA9><EFBFBD>
+            </summary>
+            <typeparam name="T"></typeparam>
+            <param name="exp"></param>
+            <param name="condition">true <20>嗥<EFBFBD><E597A5><EFBFBD></param>
+            <returns></returns>
+        </member>
+        <member name="M:FreeUtil.NewMongodbId">
+            <summary>
+            <20><><EFBFBD>蝐颱撮Mongodb<64><62>bjectId<49>匧<EFBFBD><E58CA7><EFBFBD><EFBFBD><EFBFBD>滚<EFBFBD>Guid
+            </summary>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Insert``1">
+            <summary>
+            <20>鍦<EFBFBD><E98DA6>唳旿
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Insert``1(``0)">
+            <summary>
+            <20>鍦<EFBFBD><E98DA6>唳旿嚗䔶<E59A97><E494B6>亙<EFBFBD>雿<EFBFBD>
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="source"></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Insert``1(``0[])">
+            <summary>
+            <20>鍦<EFBFBD><E98DA6>唳旿嚗䔶<E59A97><E494B6>亙<EFBFBD>雿𤘪㺭蝏<E3BAAD>
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="source"></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Insert``1(System.Collections.Generic.List{``0})">
+            <summary>
+            <20>鍦<EFBFBD><E98DA6>唳旿嚗䔶<E59A97><E494B6>亙<EFBFBD>雿㯄<E99BBF><E3AF84><EFBFBD>
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="source"></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Insert``1(System.Collections.Generic.IEnumerable{``0})">
+            <summary>
+            <20>鍦<EFBFBD><E98DA6>唳旿嚗䔶<E59A97><E494B6>亙<EFBFBD>雿㯄<E99BBF><E3AF84><EFBFBD>
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="source"></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Update``1">
+            <summary>
+            靽格㺿<E6A0BC>唳旿
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Update``1(System.Object)">
+            <summary>
+            靽格㺿<E6A0BC>唳旿嚗䔶<E59A97><E494B6>亙𢆡<E4BA99><F0A286A1>笆鞊∪<E99E8A>嚗帋蜓<E5B88B>桀<EFBFBD><E6A180> | new[]{銝駁睸<E9A781><E79DB8>1,銝駁睸<E9A781><E79DB8>2} | TEntity1 | new[]{TEntity1,TEntity2} | new{id=1}
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="dywhere">銝駁睸<EFBFBD>潦<EFBFBD><EFBFBD>蜓<EFBFBD>桀<EFBFBD>潮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>雿瓐<EFBFBD><EFBFBD><EFBFBD>雿㯄<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鈡<EFBFBD>滚笆鞊～<EFBFBD><EFBFBD>鈡<EFBFBD>滚笆鞊⊿<EFBFBD><EFBFBD><EFBFBD></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Select``1">
+            <summary>
+            <20>亥砭<E4BAA5>唳旿
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Select``1(System.Object)">
+            <summary>
+            <20>亥砭<E4BAA5>唳旿嚗䔶<E59A97><E494B6>亙𢆡<E4BA99><F0A286A1>笆鞊∪<E99E8A>嚗帋蜓<E5B88B>桀<EFBFBD><E6A180> | new[]{銝駁睸<E9A781><E79DB8>1,銝駁睸<E9A781><E79DB8>2} | TEntity1 | new[]{TEntity1,TEntity2} | new{id=1}
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="dywhere">銝駁睸<EFBFBD>潦<EFBFBD><EFBFBD>蜓<EFBFBD>桀<EFBFBD>潮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>雿瓐<EFBFBD><EFBFBD><EFBFBD>雿㯄<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鈡<EFBFBD>滚笆鞊～<EFBFBD><EFBFBD>鈡<EFBFBD>滚笆鞊⊿<EFBFBD><EFBFBD><EFBFBD></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Delete``1">
+            <summary>
+            <20>𣳇膄<F0A3B387>唳旿
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Delete``1(System.Object)">
+            <summary>
+            <20>𣳇膄<F0A3B387>唳旿嚗䔶<E59A97><E494B6>亙𢆡<E4BA99><F0A286A1>笆鞊∪<E99E8A>嚗帋蜓<E5B88B>桀<EFBFBD><E6A180> | new[]{銝駁睸<E9A781><E79DB8>1,銝駁睸<E9A781><E79DB8>2} | TEntity1 | new[]{TEntity1,TEntity2} | new{id=1}
+            </summary>
+            <typeparam name="T1"></typeparam>
+            <param name="dywhere">銝駁睸<EFBFBD>潦<EFBFBD><EFBFBD>蜓<EFBFBD>桀<EFBFBD>潮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>雿瓐<EFBFBD><EFBFBD><EFBFBD>雿㯄<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鈡<EFBFBD>滚笆鞊～<EFBFBD><EFBFBD>鈡<EFBFBD>滚笆鞊⊿<EFBFBD><EFBFBD><EFBFBD></param>
+            <returns></returns>
+        </member>
+        <member name="M:IFreeSql.Transaction(System.Action)">
+            <summary>
+            撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>嚗<EFBFBD>60蝘埝𧊋<E59F9D>扯<EFBFBD>摰<EFBFBD><E691B0><EFBFBD>芸𢆡<E88AB8>𣂷漱
+            </summary>
+            <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
+        </member>
+        <member name="M:IFreeSql.Transaction(System.TimeSpan,System.Action)">
+            <summary>
+            撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>
+            </summary>
+            <param name="timeout">頞<EFBFBD>𧒄嚗峕𧊋<EFBFBD>扯<EFBFBD>摰<EFBFBD><EFBFBD><EFBFBD>芸𢆡<EFBFBD>𣂷漱</param>
+            <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
+        </member>
+        <member name="M:IFreeSql.Transaction(System.Data.IsolationLevel,System.TimeSpan,System.Action)">
+            <summary>
+            撘<><E69298>臭<EFBFBD><E887AD>∴<EFBFBD>銝齿𣈲<E9BDBF><F0A388B2><EFBFBD>甇伐<E79487>
+            </summary>
+            <param name="isolationLevel"></param>
             <param name="handler">鈭见𦛚雿<EFBFBD> () => {}</param>
             <param name="timeout">頞<EFBFBD>𧒄嚗峕𧊋<EFBFBD>扯<EFBFBD>摰<EFBFBD><EFBFBD><EFBFBD>芸𢆡<EFBFBD>𣂷漱</param>
         </member>

FreeSql/Interface/IAdo.cs

@@ -41,9 +41,16 @@ namespace FreeSql
         /// <summary>
         /// 开启事务（不支持异步）
         /// </summary>
+        /// <param name="timeout">超时，未执行完将自动提交</param>
+        /// <param name="handler">事务体 () => {}</param>
+        void Transaction(TimeSpan timeout, Action handler);
+        /// <summary>
+        /// 开启事务（不支持异步）
+        /// </summary>
+        /// <param name="isolationLevel"></param>
         /// <param name="handler">事务体 () => {}</param>
         /// <param name="timeout">超时，未执行完将自动提交</param>
-        void Transaction(Action handler, TimeSpan timeout);
+        void Transaction(IsolationLevel isolationLevel, TimeSpan timeout, Action handler);
         /// <summary>
         /// 当前线程的事务
         /// </summary>

FreeSql/Interface/IFreeSql.cs

@@ -2,6 +2,7 @@
 using FreeSql.Internal;
 using System;
 using System.Collections.Generic;
+using System.Data;
 using System.Linq.Expressions;
 
 public interface IFreeSql<TMark> : IFreeSql { }
@@ -93,9 +94,16 @@ public interface IFreeSql : IDisposable
     /// <summary>
     /// 开启事务（不支持异步）
     /// </summary>
+    /// <param name="timeout">超时，未执行完将自动提交</param>
+    /// <param name="handler">事务体 () => {}</param>
+    void Transaction(TimeSpan timeout, Action handler);
+    /// <summary>
+    /// 开启事务（不支持异步）
+    /// </summary>
+    /// <param name="isolationLevel"></param>
     /// <param name="handler">事务体 () => {}</param>
     /// <param name="timeout">超时，未执行完将自动提交</param>
-    void Transaction(Action handler, TimeSpan timeout);
+    void Transaction(IsolationLevel isolationLevel, TimeSpan timeout, Action handler);
 
     /// <summary>
     /// 数据库访问对象

FreeSql/Internal/CommonProvider/AdoProvider/AdoProviderTransaction.cs

@@ -1,7 +1,8 @@
 using SafeObjectPool;
 using System;
-using System.Collections.Generic;
 using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Data;
 using System.Data.Common;
 using System.Diagnostics;
 using System.Linq;
@@ -33,7 +34,7 @@ namespace FreeSql.Internal.CommonProvider
 
         public DbTransaction TransactionCurrentThread => _trans.TryGetValue(Thread.CurrentThread.ManagedThreadId, out var conn) && conn.Transaction?.Connection != null ? conn.Transaction : null;
 
-        public void BeginTransaction(TimeSpan timeout)
+        public void BeginTransaction(TimeSpan timeout, IsolationLevel? isolationLevel)
         {
             if (TransactionCurrentThread != null) return;
 
@@ -44,7 +45,7 @@ namespace FreeSql.Internal.CommonProvider
             try
             {
                 conn = MasterPool.Get();
-                tran = new Transaction2(conn, conn.Value.BeginTransaction(), timeout);
+                tran = new Transaction2(conn, isolationLevel == null ? conn.Value.BeginTransaction() : conn.Value.BeginTransaction(isolationLevel.Value), timeout);
             }
             catch (Exception ex)
             {
@@ -102,15 +103,15 @@ namespace FreeSql.Internal.CommonProvider
         public void CommitTransaction() => CommitTransaction(true);
         public void RollbackTransaction() => CommitTransaction(false);
 
-        public void Transaction(Action handler)
-        {
-            Transaction(handler, TimeSpan.FromSeconds(60));
-        }
-        public void Transaction(Action handler, TimeSpan timeout)
+        public void Transaction(Action handler) => TransactionInternal(null, TimeSpan.FromSeconds(60), handler);
+        public void Transaction(TimeSpan timeout, Action handler) => TransactionInternal(null, timeout, handler);
+        public void Transaction(IsolationLevel isolationLevel, TimeSpan timeout, Action handler) => TransactionInternal(isolationLevel, timeout, handler);
+
+        void TransactionInternal(IsolationLevel? isolationLevel, TimeSpan timeout, Action handler)
         {
             try
             {
-                BeginTransaction(timeout);
+                BeginTransaction(timeout, isolationLevel);
                 handler();
                 CommitTransaction();
             }