private void Button_Click_2(object sender, RoutedEventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.DefaultExt = ".img";
dlg.Filter = "Android System Image |*.iso;*.img";
if (dlg.ShowDialog() == true)
{
txtISOPath.Text = dlg.FileName;
cmdInstall.IsEnabled = true;
}
}