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

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);