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Nokia just released 'Nokia Imaging SDK' version 1. However, now I can not use a Stream download image since SDK's StreamImageSource tries to use Stream.Length which is unavailable for Async Stream. How can I get around this issue?

Here is my code:

HttpClient c = new HttpClient();
Stream orgImageStream = await c.GetStreamAsync(imageUri);
var imageSource = new StreamImageSource(orgImageStream);  //fails here since he tries to use Stream.Length
Peter Mortensen
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João Louros
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1 Answers1

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Interesting bug - it would be useful to report it to Nokia.
Anyway, you can solve it by either saving the file to isolated storage first, or copying it to MemoryStream locally: 

HttpClient c = new HttpClient();
Stream orgImageStream = await c.GetStreamAsync(imageUri);

MemoryStream ms = new MemoryStream();
await orgImageStream.CopyToAsync(ms);
ms.Seek(0, SeekOrigin.Begin);
var imageSource = new StreamImageSource(ms);

But don't forget to use all Streams in using (Stream ... ) { ... } to Dispose them properly!

Martin Suchan
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  • After some late night coding I figured out a similar approach. I cast the Stream to a byte[] and pass it to a MemoryStream to feed StreamImageSource. I haven't tried your approach, but I will mark it as answered. Thanks Martin – João Louros Nov 14 '13 at 14:39
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    Note that since the stream data is now in fact loaded in memory, you can avoid some overhead by using BufferImageSource instead. – CÅdahl Nov 18 '13 at 08:51