C# 命令执行期间遇到致命错误

当我从c#代码在远程mysql上执行存储过程时，会出现一般错误： “执行命令时遇到致命错误” 全部详情：

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：

sp与此相同：

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;

但当我在本地mysql上实现这一点时，它也成功了！

---

对于远程mysql，我尝试发送少量数据（3条记录）并成功执行，但对于大数据（1500条记录），执行失败

如果在这里执行多个操作，代码中可能存在线程安全问题，使用

AsyncWaitHandle

而不是对

IAsyncResult

的

IsComplete

属性进行轮询，可以从中获益

在执行查询时，我遇到了这个问题，因为我的查询占用的时间超过了我的MysqlCommand CommandTimeout默认值。因此，我只是增加了这个时间，之后就没有了这样的错误

MysqlCommand cmd = new MysqlCommand();
cmd.CommandTimeout = 200;

非常感谢，我添加了while（！myResult.IsCompleted）{myResult.AsyncWaitHandle.WaitOne（）；}，解决了我的问题！再次感谢。

MysqlCommand cmd = new MysqlCommand();
cmd.CommandTimeout = 200;