//Username = "root"
//Hostname = "localhost"
//Query: "SHOW GRANTS FOR root @'localhost';"
objConn.InitCommand(CommandType.Text, "SHOW GRANTS FOR @Username @'@Hostname';");
objConn.AddParameter(ref lngErrorNo, ref strErrorMsg, "@Username", MySqlDbType.String, ParameterDirection.Input, Username);
objConn.AddParameter(ref lngErrorNo, ref strErrorMsg, "@Hostname", MySqlDbType.String, ParameterDirection.Input, Hostname);
if (objConn.ExecuteCommandObjRsReader(ref reader, ref lngErrorNo, ref strErrorMsg) == false)
    blnReturn = false;