/// <summary>
 /// TODO: Add code to remind about saving before opening
 /// dialog.
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void btnDeleteOld_Click(object sender, EventArgs e)
 {
     using (frmDeleteOldFiles OldFilesForm = new frmDeleteOldFiles(flm))
     {
         OldFilesForm.ShowDialog();
     }
     this.Focus();
 }
 private void btnDeleteOldFiles_Click(object sender, EventArgs e)
 {
     using (frmDeleteOldFiles OldFilesForm = new frmDeleteOldFiles(this.FileListManager))
     {
         OldFilesForm.ShowDialog(this);
         if (OldFilesForm.FilesChanged)
         {
             PopulateForm(first_run: false);
             UpdateView();
         }
     }
 }