private void PrintServiceProvider_StatusChanged(object sender, PrintServiceEventArgs e)
 {
     (this.DataContext as MainPageViewModel).Message = e.Message;
 }
 /// <summary>
 /// Raises the status changed event.
 /// </summary>
 protected virtual void OnStatusChanged(PrintServiceEventArgs e)
 {
     if (this.StatusChanged != null)
     {
         this.StatusChanged(this, e);
     }
 }