Windows phone screenshot 截圖 代碼

看了Alexis的文章，http://www.cnblogs.com/alexis/archive/2011/06/01/2067220.html，

關於windows phone螢幕的，

試了一下，螢幕翻轉在landscape的狀態下，貌似有問題，

於是google了一下，

發現如下代碼：(http://blog.markarteaga.com/ScreenCaptureOnWindowsPhone7.aspx)

private void btnCaptureScreen_Click(object sender, RoutedEventArgs e)
{
//Capture the screen and set it to the internal picture box
    WriteableBitmap bmp = new WriteableBitmap((int)this.ActualWidth, (int)this.ActualHeight);
    bmp.Render(this, null);
    bmp.Invalidate();
//this.image1.Source = bmp;

//Set a new background
//ImageBrush brush = new ImageBrush();
//brush.ImageSource = new BitmapImage(new Uri(NextImage,UriKind.Relative));
//ContentGrid.Background = brush;
    
}

經嘗試，可成功。