public RecentItem(string FileName)
{
InitializeComponent();
_filePath = FileName;
UrlButton.Content = Path.GetFileName(FileName);
UrlButton.CommandBindings.Add(new CommandBinding(NavigationCommands.GoToPage,
(s, e) => Process.Start(_filePath),
(s, e) => e.CanExecute = File.Exists(_filePath)));
}