diff --git a/Src/Asp.NetCore2/GbaseTest/Demo/Demo0_SqlSugarClient.cs b/Src/Asp.NetCore2/GbaseTest/Demo/Demo0_SqlSugarClient.cs
index d0f198f49..b48394561 100644
--- a/Src/Asp.NetCore2/GbaseTest/Demo/Demo0_SqlSugarClient.cs
+++ b/Src/Asp.NetCore2/GbaseTest/Demo/Demo0_SqlSugarClient.cs
@@ -16,7 +16,6 @@ namespace OrmTest
             SqlSugarClient();//Create db
             DbContext();//Optimizing SqlSugarClient usage
             SingletonPattern();//Singleten Pattern
-            DistributedTransactionExample(); 
             MasterSlave();//Read-write separation 
             CustomAttribute(); 
         }
@@ -227,130 +226,7 @@ where a.tabtype in ('T', 'V')  and not (a.tabname like 'sys%') AND a.tabname <>'
             });
 
 
-        private static void DistributedTransactionExample()
-        {
-            Console.WriteLine("");
-            Console.WriteLine("#### Distributed TransactionExample Start ####");
-            SqlSugarClient db = new SqlSugarClient(new List<ConnectionConfig>()
-            {
-                new ConnectionConfig(){ ConfigId="1", DbType=DbType.GBase, ConnectionString=Config.ConnectionString,InitKeyType=InitKeyType.Attribute,IsAutoCloseConnection=true },
-                new ConnectionConfig(){ ConfigId="2", DbType=DbType.GBase, ConnectionString=Config.ConnectionString2 ,InitKeyType=InitKeyType.Attribute ,IsAutoCloseConnection=true}
-            });
-
-            var db1 = db.Ado.Connection.Database;
-            //use db1
-            db.CodeFirst.SetStringDefaultLength(200).InitTables(typeof(Order), typeof(OrderItem));//
-            db.Insertable(new Order() { Name = "order1", CreateTime = DateTime.Now }).ExecuteCommand();
-            Console.WriteLine(db.CurrentConnectionConfig.DbType + ":" + db.Queryable<Order>().Count());
-
-            //use db2
-            db.ChangeDatabase("2");
-            var db2 = db.Ado.Connection.Database;
-            db.DbMaintenance.CreateDatabase();//Create Database2
-            db.CodeFirst.SetStringDefaultLength(200).InitTables(typeof(Order), typeof(OrderItem));
-            db.Insertable(new Order() { Name = "order1", CreateTime = DateTime.Now }).ExecuteCommand();
-            Console.WriteLine(db.CurrentConnectionConfig.DbType + ":" + db.Queryable<Order>().Count());
-
-            if (db2 == db1)
-            {
-                return;
-            }
-
-            // Example 1
-            Console.WriteLine("Example 1");
-            try
-            {
-                db.BeginTran();
-
-                db.ChangeDatabase("1");//use db1
-                db.Deleteable<Order>().ExecuteCommand();
-                Console.WriteLine("---Delete all " + db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                db.ChangeDatabase("2");//use db2
-                db.Deleteable<Order>().ExecuteCommand();
-                Console.WriteLine("---Delete all " + db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                throw new Exception();
-                db.CommitTran();
-            }
-            catch
-            {
-                db.RollbackTran();
-                Console.WriteLine("---Roll back");
-                db.ChangeDatabase("1");//use db1
-                Console.WriteLine(db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                db.ChangeDatabase("2");//use db2
-                Console.WriteLine(db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-            }
-
-
-
-            // Example 2
-            Console.WriteLine("Example 2");
-
-            var result=db.UseTran(() =>
-            {
-
-                db.ChangeDatabase("1");//use db1
-                db.Deleteable<Order>().ExecuteCommand();
-                Console.WriteLine("---Delete all " + db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                db.ChangeDatabase("2");//use db2
-                db.Deleteable<Order>().ExecuteCommand();
-                Console.WriteLine("---Delete all " + db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-                throw new Exception("");
-
-            });
-            if (result.IsSuccess == false) {
-                Console.WriteLine("---Roll back");
-                db.ChangeDatabase("1");//use db1
-                Console.WriteLine(db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                db.ChangeDatabase("2");//use db2
-                Console.WriteLine(db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-            }
-
-            // Example 3
-            Console.WriteLine("Example 3");
-
-            var result2 = db.UseTranAsync(async () =>
-            {
-
-                db.ChangeDatabase("1");//use db1
-                await db.Deleteable<Order>().ExecuteCommandAsync();
-                Console.WriteLine("---Delete all " + db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                db.ChangeDatabase("2");//use db2
-                await db.Deleteable<Order>().ExecuteCommandAsync();
-                Console.WriteLine("---Delete all " + db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-                throw new Exception("");
-
-            });
-            result2.Wait();
-            if (result2.Result.IsSuccess == false)
-            {
-                Console.WriteLine("---Roll back");
-                db.ChangeDatabase("1");//use sqlserver
-                Console.WriteLine(db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-
-                db.ChangeDatabase("2");//use mysql
-                Console.WriteLine(db.CurrentConnectionConfig.DbType);
-                Console.WriteLine(db.Queryable<Order>().Count());
-            }
-
-        }
+      
     }
 
     /// <summary>