c# – 命令执行期间遇到致命错误

当我从我的c#代码执行远程 mysql上的存储过程时,我得到一般错误：
“在命令执行期间遇到致命错误”
总详情：

MysqL.Data.MysqLClient.MysqLException: Fatal error encountered during command execution. --->  MysqL.Data.MysqLClient.MysqLException: Fatal error encountered attempting to read the resultset. --->  MysqL.Data.MysqLClient.MysqLException: Reading from the stream has Failed.
--->  System.IO.EndOfStreamException: Attempted to read past the end of the stream.    at MysqL.Data.MysqLClient.MysqLStream.ReadFully(Stream stream,Byte[] buffer,Int32 offset,Int32 count)    at MysqL.Data.MysqLClient.MysqLStream.LoadPacket()
--- End of inner exception stack trace ---    at MysqL.Data.MysqLClient.MysqLStream.LoadPacket() at MysqL.Data.MysqLClient.MysqLStream.ReadPacket() at MysqL.Data.MysqLClient.NativeDriver.GetResult(Int32& affectedRow,Int32& insertedId)    at MysqL.Data.MysqLClient.Driver.GetResult(Int32 statementId,Int32& affectedRows,Int32& insertedId)    at MysqL.Data.MysqLClient.Driver.NextResult(Int32 statementId)    at MysqL.Data.MysqLClient.MysqLDataReader.NextResult()
--- End of inner exception stack trace ---    at MysqL.Data.MysqLClient.MysqLDataReader.NextResult() at MysqL.Data.MysqLClient.MysqLCommand.ExecuteReader(CommandBehavior behavior)    --- End of inner exception stack trace ---    at MysqL.Data.MysqLClient.MysqLCommand.EndExecuteNonQuery(IAsyncResult asyncResult

)

我的c#代码：

internal void InsertUpdateMysqL(string connectionstring,string storedprocedure)
    {
        string sLog = "internal void InsertUpdateMysqL(string connectionstring,string storedprocedure)";
        MysqLConnection conn = new MysqLConnection();
        int rowsAffected = 0;
        try
        {
            if (!string.IsNullOrEmpty(storedprocedure) && !string.IsNullOrEmpty(connectionstring))
            {
                conn.ConnectionString = connectionstring;
                MysqLCommand cmd = new MysqLCommand(storedprocedure);
                cmd.Connection = conn;
                conn.Open();
                IAsyncResult myResult = cmd.BeginExecuteNonQuery(null,null);
                SetProgressinRichText("In progress\n");
                while (!myResult.IsCompleted)
                {
                    SetProgressinRichText(".");
                }
                rowsAffected = cmd.EndExecuteNonQuery(myResult);
            }
        }
        catch (MysqLException ex)
        {
            this.service.WriteToLog(source,sLog + "\n" + ex.Message + "\n" + ex.StackTrace);
        }
        catch (Exception ex)
        {
            this.service.WriteToLog(source,sLog + "\n" + ex.Message + "\n" + ex.StackTrace);
        }
        finally
        {
            if (conn.State != System.Data.ConnectionState.Closed)
                conn.Close();
        }
    }

sp是这样的：

DELIMITER $$


CREATE  PROCEDURE `SPInsertUpdateCity`( in SP_CityName VARCHAR(100) charset utf8,in SP_CitySynonyms varchar(100) charset utf8,in SP_CityNumberPostOffice varchar(100)) BEGIN   if(not exists(select CityID from city where CityName = SP_CityName)) then      insert into city(CityName,CityNumberPostOffice) values(SP_CityName,SP_CityNumberPostOffice);      insert into citysynonym (CityID,CitySynonymName) values(Last_insert_id(),SP_CitySynonyms);      else if(not exists( select  CitySynonymID from    citysynonym where   CitySynonymName = SP_CitySynonyms)) then    
                insert into citysynonym (CityID,CitySynonymName) values((select cityid from city where CityName=SP_CityName),SP_CitySynonyms);     end if;    end if; END$$

DELIMITER ;

连接字符串：

Server=XXXX; Port=XXXX; Database=XXXX; Uid=XXXX;Pwd=XXXX;charset=utf8;default command timeout=7200;

但是当我在本地MysqL上表示优异时,它也是成功的！
对于远程MysqL我试图发送少量数据(3条记录)并且执行成功,但对于大数据(1500条记录),执行失败

解决方法

如果此处有多个操作,您的代码中可能存在线程安全问题,并且可能会受益于使用AsyncWaitHandle而不是轮询IAsyncResult的IsComplete属性.

原文链接：https://www.f2er.com/csharp/91653.html

c# – 命令执行期间遇到致命错误

解决方法

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