Ibatis.net总是报：【ExecuteStoreCommand SqlParameterCollection 中已包含 SqlParameter】

今天很奇怪调用EF的ExecuteStoreCommand 出现了个这样的错误，怎么也调试不过，痛定思痛

原来 command被连着调用了而没有销毁掉

  public  static DataTable GetDataTable(
            string connDBStr, string sql, params SqlParameter[] cmdParms)
        {
            SqlCommand cmd = new SqlCommand();
            using (SqlConnection conn = new SqlConnection(connDBStr))
            {
                PrepareSqlCommand(cmd, conn, null, sql, cmdParms);
                SqlDataAdapter da = new SqlDataAdapter(cmd);
                DataTable dt = new DataTable　　　　(SetSqlAsDataTableName(sql));
                da.Fill(dt);
                cmd.Parameters.Clear(); // 多了这一句，就解决了问题
                return dt;
            }

        }

还要说说EF调用 ExecuteStoreCommand 的用法

string orderCode =“test1”；

 

string dishMenuCode=“test2”

 

          var parameter = new SqlParameter[]{

                

  new SqlParameter("@p_order",orderCode),
                    new SqlParameter("@p_dish",dishMenuCode),
                };//多个参数的列子
               

ef.ExecuteStoreCommand( " update dbo.order_info_ed set dpState='1' where orderCode=@p_order and dishMenuCode=@p_dish ", parameter);

                var paramenter2 = new SqlParameter { ParameterName = " @p_user ", Value = " gxw " }; // 一个参数的例子
                ef.ExecuteStoreCommand( " select * From UserTable where username=@p_user ", paramenter2);