Question

这个问题在前面已经讨论过了，但这并不能帮助我解决问题。

这是我的以下存储过程，可避免进行投资。

ALTER  procedure [dbo].[mark_inactive]                  
@order_id int,                 
@intResult int output                  
as                  
BEGIN transaction               

Declare @Error as int

update investment_orders set investment_active = 0 where order_id = @order_id


-- if error in saving details                    
Select @Error = @@error                    
 if(@Error<>0)                    
 Begin                    
  Set @intResult = 0                    
  rollback transaction            
  return                      
 End          
commit transaction                    
return @intResult

和代码隐藏函数来调用过程

 public int ExecuteSqlSP(SqlParameter[] arrParam, string strSPName)
    {
        OpenConnection();
        _mDataCom.CommandType = CommandType.StoredProcedure;
        _mDataCom.CommandText = strSPName;
        _mDataCom.CommandTimeout = 30;
        for (int i = 0; i < arrParam.Length; i++)
        {
            _mDataCom.Parameters.Add(arrParam[i]);
        }

        _mDataCom.ExecuteNonQuery();
        int intResult = Int32.Parse(_mDataCom.Parameters["@intResult"].Value.ToString());
        CloseConnection();
        DisposeConnection();
        return intResult;
    }

虽然更新了一行，但以下错误显示

Input string was not in a correct format.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.FormatException: Input string was not in a correct format.

对不起，如果有任何错误。请帮助我解决问题。

谢谢

Answer 1

成功更新后，您不会从编写的存储过程中返回任何值。

您的程序应类似于

ALTER  procedure [dbo].[mark_inactive]                  
@order_id int,                 
@intResult int output                  
as                  
BEGIN transaction               

Declare @Error as int

update investment_orders set investment_active = 0 where order_id = @order_id;
SET @intResult = 1; // 1 OR whatever desired value you wanna return

-- if error in saving details                    
Select @Error = @@error                    
 if(@Error<>0)                    
 Begin                    
  Set @intResult = 0                    
  rollback transaction            
  return                      
 End          
commit transaction                    
return @intResult

System.FormatException'发生在mscorlib.dll中，但未在用户代码错误中处理

1 个答案: