/// <summary>
 /// On download progress changed event
 /// </summary>
 /// <param name="sender">Sender</param>
 /// <param name="e">Downnload progress changed event arguments</param>
 private void OnDownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
 {
     downloadProgressBar.Maximum = (int)(e.TotalBytesToReceive);
     downloadProgressBar.Value   = (int)(e.BytesReceived);
     TaskbarProgress.SetValue(this, e.BytesReceived, e.TotalBytesToReceive);
 }