优化DR连接

Optimize the DR connection

SqlServerTest/Demos/1_Query.cs

@@ -59,11 +59,12 @@ namespace OrmTest.Demo
         private static void Tran()
         {
             var db = GetInstance();
-
+            var x=db.Insertable(new Student() { CreateTime = DateTime.Now, Name = "tran" }).ExecuteCommand();
             //1. no result 
             var result = db.Ado.UseTran(() =>
                {
-                   var beginCount = db.Queryable<Student>().Count();
+          
+                   var beginCount = db.Queryable<Student>().ToList();
                    db.Ado.ExecuteCommand("delete student");
                    var endCount = db.Queryable<Student>().Count();
                    throw new Exception("error haha");

SqlSugar/Abstract/AdoProvider/AdoProvider.cs

@@ -223,7 +223,8 @@ namespace SqlSugar
         {
             ExecuteBefore(sql, parameters);
             IDbCommand sqlCommand = GetCommand(sql, parameters);
-            IDataReader sqlDataReader = sqlCommand.ExecuteReader(CommandBehavior.CloseConnection);
+            var isAutoClose = this.Context.CurrentConnectionConfig.IsAutoCloseConnection && this.Transaction == null;
+            IDataReader sqlDataReader =  sqlCommand.ExecuteReader(isAutoClose?CommandBehavior.CloseConnection:CommandBehavior.Default);
             if (this.IsClearParameters)
                 sqlCommand.Parameters.Clear();
             ExecuteAfter(sql, parameters);

SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs

@@ -566,7 +566,6 @@ namespace SqlSugar
                 {
                     result = this.Bind.DataReaderToList<TResult>(entityType, dataReader, QueryBuilder.SelectCacheKey);
                 }
-                if (this.Context.CurrentConnectionConfig.IsAutoCloseConnection) this.Context.Close();
             }
             RestoreMapping();
             SetContextModel(result, entityType);