public void HandleChangeTempDirClick(object Sender, RoutedEventArgs args)
{
FolderBrowserDialog d = new FolderBrowserDialog();
d.Description = "Choose a location to store temporary data during updates:";
DialogResult r = d.ShowDialog();
if (r == System.Windows.Forms.DialogResult.OK)
{
viewModel.SetNewTempDir(d.SelectedPath);
}
}