<图片>———屏幕截图、图片保存至图片库

屏幕截图并保存至图片库代码：

WriteableBitmap bmp = new WriteableBitmap(480, 800);
bmp.Render(App.Current.RootVisual, null);
bmp.Invalidate();
MemoryStream stream = new MemoryStream();
bmp.SaveJpeg(stream, bmp.PixelWidth, bmp.PixelHeight, 0, 80);
stream.Seek(0, SeekOrigin.Begin);
MediaLibrary library = new MediaLibrary();
string filename = "BarCode_lxh_" + DateTime.Now.ToString("yyyy-MM-dd_hh:mm:ss");
library.SavePicture(filename, stream);
stream.Close();

再分享一下网上的段代码：

private void button1_Click(object sender, RoutedEventArgs e)
{
    string tempJPEG = "WhiteParis.png";
    var store = IsolatedStorageFile.GetUserStoreForApplication();
    if (store.FileExists(tempJPEG))
    {
        store.DeleteFile(tempJPEG);
    }

    IsolatedStorageFileStream fileStream = store.CreateFile(tempJPEG);
    StreamResourceInfo sri = null;
    Uri uri = new Uri("Images/WhiteParis.png", UriKind.Relative);
    sri = Application.GetResourceStream(uri);

    BitmapImage bitmap = new BitmapImage();
    bitmap.SetSource(sri.Stream);
    WriteableBitmap wbmp = new WriteableBitmap(bitmap);

    Extensions.SaveJpeg(wbmp, fileStream, wbmp.PixelWidth, wbmp.PixelHeight, 0, 85);
    fileStream .Close ();


    fileStream = store.OpenFile(tempJPEG, FileMode.Open, FileAccess.Read);

    MediaLibrary mediaLibrary = new MediaLibrary();
    Picture pic = mediaLibrary.SavePicture("WhiteParis.png", fileStream);
    fileStream.Close();
}