private void clearDataGrid()
 {
     if (!MyDialog.confirm("Do you want to clear all data?"))
     {
         return;
     }
     datagridView.Rows.Clear();
     datagridView.Refresh();
     initDatagridView();
 }
 protected override void OnFormClosing(FormClosingEventArgs e)
 {
     if (MyDialog.confirm("Do you want to exit?") == true)
     {
         Application.Exit();
     }
     else
     {
         return;
     }
 }
 private void btnGenerate_Click(object sender, EventArgs e)
 {
     if (!MyDialog.confirm("Do you want to generate stickers?"))
     {
         return;
     }
     progressBar.Show();
     ThreadUtil.InvokeAsync(this, (f) =>
     {
         generateStickers();
     });
 }