private void cancellationToolStripMenuItem_Click(object sender, EventArgs e)
 {
     if (_cancellation == null || _cancellation.IsDisposed == true)
     {
         _cancellation = new frmCancellation();
         _cancellation.Show();
     }
     _cancellation.BringToFront();
 }
 private void LnkLbCancellation_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
 {
     if (_cancellation == null || _cancellation.IsDisposed == true)
     {
         _cancellation = new frmCancellation();
         _cancellation.Show();
     }
     _cancellation.BringToFront();
 }