“Fatal error encountered during command execution.” mysql-connector .net

问题

I am using following code:

MySqlTransaction trnData = pconDB.BeginTransaction();
MySqlCommand cmdData = new MySqlCommand();

cmdData.Connection = pconDB;
cmdData.CommandTimeout = plngQueryTimeOut;
cmdData.CommandType = CommandType.Text;
cmdData.CommandText = "CALL spsOME( 4, 'DATA', 389552022,@intOutReturn);";
cmdData.Transaction = trnData;
plngRecordsCount = cmdData.ExecuteNonQuery();

Isn't CALL statement possible directly from .net library? The same query is working on workbench.

回答1:

Change two lines to this:

   cmdData.CommandType = CommandType.StoredProcedure;
   cmdData.CommandText = "spsOME( 4, 'DATA', 389552022,@intOutReturn);";

You will also need to add a parameter to the Parameters collection of cmData for the @intOutReturn parameter. I won't give an example of this as the syntax varies with databases and I don't know what MySQL's looks like.

Also, this line:

cmdData.Transaction = trnData;

..is only necessary if you are doing other db operations which should be in the same transaction. If you're not, I'd leave that line out.

来源：https://stackoverflow.com/questions/24279926/fatal-error-encountered-during-command-execution-mysql-connector-net