void ClearImageSource()
{
if (_sisNative != null)
{
image.Source = null;
_sisNative.Dispose();
_sisNative = null;
_imageSource = null;
}
}
void MainPage_Unloaded(object sender, RoutedEventArgs e)
{
DiscardDeviceResources();
_bitmap.Dispose();
_d2dFactory.Dispose();
_dwFactory.Dispose();
image.Source = null;
_sisNative.Dispose();
_sisNative = null;
}
void CreateImageSource()
{
ClearImageSource();
_imageSource = new SurfaceImageSource(_bitmap.PixelWidth, _bitmap.PixelHeight, false);
_sisNative = ComObject.QueryInterface <DXGI.ISurfaceImageSourceNative>(_imageSource);
_sisNative.SetDevice(_dxgiDevice);
UpdateImageSource(false);
image.Source = _imageSource;
}