/// <summary>
 /// Handles the FormClosed event of the frmProgressDialog control.
 /// </summary>
 private void frmProgressDialog_FormClosed(object sender, FormClosedEventArgs e)
 {
     _progressDialog = null;
 }
 /// <summary>
 /// Initializes a new instance of the frmProgressDialog class.
 /// </summary>
 /// <param name="progressDialog">The progress dialog component that launched the form.</param>
 public frmProgressDialog(ProgressDialog progressDialog)
 {
     InitializeComponent();
     _progressDialog = progressDialog;
     btnCancel.DialogResult = DialogResult.None;
 }