mysql-VS2010+MYSQL 存儲過程調用出錯

mysqlvisual studio 2010c#

VS2010+MYSQL，
連接字符串
server=**.***.***.**; user id=*; password=*; database=*; pooling=false;charset=gb2312
和Database=*;Data Source=**.***.***.**;User Id=*;Password=*;pooling=false;CharSet=utf8;port=3306
都試過，只要存儲過程查詢結果一用到case when，ifnull，CONCAT這些去處理，那麼在工具中調用該
存儲過程(CALL TEST())沒問題，但是在c#代碼中就報錯，錯誤內容為：指定的索引鍵不在字典中。
請教下大神們這是咋回事呢
於 System.Collections.Generic.Dictionary`2.get_Item(TKey key)
於 MySql.Data.MySqlClient.CharSetMap.GetChararcterSet(DBVersion version, String CharSetName)
於 MySql.Data.MySqlClient.NativeDriver.GetFieldMetaData41()
於 MySql.Data.MySqlClient.NativeDriver.GetFieldMetaData()
於 MySql.Data.MySqlClient.NativeDriver.ReadColumnMetadata(Int32 count)
於 MySql.Data.MySqlClient.MySqlDataReader.NextResult()
於 MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
於 MySql.Data.MySqlClient.MySqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
於 System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
於 System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
於 System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
於 System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)
DataSet ds = new DataSet();
MySqlCommand cmd = new MySqlCommand(stroeProcedure, Connection);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddRange(values);
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
da.Fill(ds);
connection.Close();

<code>                            在da.Fill(ds)這就報錯了。。。</code>

SQL 如下，只要用到case when和concat，代碼調用時就報這個錯誤
SELECT C.ORDER_NO ,-- CONCAT(C.ORDER_CANCEL_REASON,'') AS aa-- ,case when C.status=1 then '申請取消'
else 'N/A'
end AS "status"
FROM AREA_T A,GROUP_BUYING_T B,ORDER_T C,PAY_TYPE_T D
WHERE A.AREA_ID = C.AREA_ID
AND B.GROUP_BUYING_ID = C.GROUP_BUYING_ID
AND C.PAY_TYPE_ID=D.PAY_TYPE_ID
AND C.ORDER_NO=V_ORDER_NO