private void button1_Click(object sender, EventArgs e)
        {
            err.Clear();
            bool valid = true;

            if (string.IsNullOrWhiteSpace(txtFileName.Text))
            {
                err.SetError(button2, "請選擇存檔位置");
                valid = false;
            }
            if (checkBox1.Checked)
            {
                if (txtCrmPassword.Text != txtPassword.Text)
                {
                    err.SetError(txtCrmPassword, "密碼不相符");
                    valid = false;
                }
            }

            if (!valid)
                return;

            ExportHelper eh = new ExportHelper(_tableName);
            eh.OccurError += new EventHandler<ErrorEventArgs>(eh_OccurError);
            eh.Completed += new EventHandler<ExportEventArgs>(eh_Completed);
            eh.Export();
        }
 private void cmExportPlainText_Click(object sender, EventArgs e)
 {
     ExportHelper eh = new ExportHelper(this.Table.Name);
     eh.OccurError += new EventHandler<ErrorEventArgs>(eh_OccurError);
     eh.Completed += new EventHandler<ExportEventArgs>(eh_Completed);
     eh.Export();
 }