private void buttonConnect_Click(object sender, EventArgs e)
        {
            try
            {
                _DB2Access = new Common.DB2Access();
                //_DB2Access = new Common.DB2AccessODBC();
                _DB2Access.ConnectingString = textBoxConnString.Text;
                _DB2Access.Open();

                FieldsLock(false);
                FieldsImageLock(true);
                FieldsClear(false);

                textBoxImageID.Focus();
            }
            catch (System.Exception ex)
            {
                this.labelMsg.Text = ex.Message;
            }
        }