Zkusili jste:
using (MySqlConnection con = new MySqlConnection(ConfigurationManager.ConnectionStrings["mysqlCon"].ConnectionString))
{
con.open();
MySqlDataAdapter DataDTTables = new MySqlDataAdapter(MySQLCommandFunc)
DataDTTables.SelectCommand.CommandTimeout = 240000;
MySQLCommandFunc.Connection = con;
DataDTTables.Fill(DTTableTable);
con.close();
}
?