private void btnDownload_ButtonClick(object sender, DevExpress.XtraEditors.Controls.ButtonPressedEventArgs e)
{
if (this.FilesGridView.GetFocusedRow() is Files item)
{
ScannerHelper.DownloadFile("Document-Files", item.Id, web =>
{
web.DownloadProgressChanged += Web_DownloadProgressChanged;
});
}
}