使用Silverlight进行版本检测

private void CheckForSilverlightUpdate()
{
    if (Application.Current.IsRunningOutOfBrowser &&
        Application.Current.HasElevatedPermissions)
    {
        Deployment.Current.CheckForUpdateCompleted +=
            new CheckForUpdateCompletedEventHandler(Current_CheckForUpdateCompleted);
        Deployment.Current.CheckForUpdateAsync();
    }
}

void Current_CheckForUpdateCompleted(object sender, CheckForUpdateCompletedEventArgs e)
{
    if (e.Error == null)
    {
        if (e.UpdateAvailable)
        {
            MessageBox.Show("A new version of the application is available. Please update now.",
                "Update Available", MessageBoxButton.OK);
        }
    }
}