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using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using Windows.UI.Xaml.Media.Imaging;
#if WINDOWS_UWP
namespace Xamarin.Forms.Platform.UWP
#else
namespace Xamarin.Forms.Platform.WinRT
#endif
{
public sealed class StreamImageSourceHandler : IImageSourceHandler
{
public async Task<Windows.UI.Xaml.Media.ImageSource> LoadImageAsync(ImageSource imagesource, CancellationToken cancellationToken = new CancellationToken())
{
BitmapImage bitmapimage = null;
var streamsource = imagesource as StreamImageSource;
if (streamsource != null && streamsource.Stream != null)
{
using (Stream stream = await ((IStreamImageSource)streamsource).GetStreamAsync(cancellationToken))
{
if (stream == null)
return null;
bitmapimage = new BitmapImage();
await bitmapimage.SetSourceAsync(stream.AsRandomAccessStream());
}
}
return bitmapimage;
}
}
}
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