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    <p>The IRandomAccessStream has a method called GetInputStreamAt <a href="http://msdn.microsoft.com/en-US/library/windows/apps/windows.storage.streams.irandomaccessstream" rel="nofollow">http://msdn.microsoft.com/en-US/library/windows/apps/windows.storage.streams.irandomaccessstream</a></p> <pre><code>IInputStream inputStream = stream.GetInputStreamAt(0); </code></pre> <p>This gets you an IInputStream. </p> <p>The IInputStream interface defines just one method, ReadAsync, which lets you read bytes into an IBuffer object. Windows.Storage.Stream also includes a DataReader class that you create based on an IInputStream object and then read numerous .NET objects from the stream as well as arrays of bytes. <a href="http://www.charlespetzold.com/blog/2011/11/080203.html" rel="nofollow">http://www.charlespetzold.com/blog/2011/11/080203.html</a> , <a href="http://msdn.microsoft.com/library/windows/apps/BR208119" rel="nofollow">http://msdn.microsoft.com/library/windows/apps/BR208119</a></p> <pre><code>using (var stream = new InMemoryRandomAccessStream()) { // for example, render pdf page var pdfPage = document.GetPage((uint)i); await pdfPage.RenderToStreamAsync(stream); // then, write page to file using (var reader = new DataReader(stream)) { await reader.LoadAsync((uint)stream.Size); var buffer = new byte[(int)stream.Size]; reader.ReadBytes(buffer); await Windows.Storage.FileIO.WriteBytesAsync(file, buffer); } } </code></pre> <p>now you have a buffer containing all the read bytes.</p> <p>you can now save this buffer to a file <a href="http://blog.jerrynixon.com/2012/06/windows-8-how-to-read-files-in-winrt.html" rel="nofollow">http://blog.jerrynixon.com/2012/06/windows-8-how-to-read-files-in-winrt.html</a></p> <pre><code>var file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync("MyWav.wav", Windows.Storage.CreationCollisionOption.ReplaceExisting); await Windows.Storage.FileIO.WriteBytesAsync(file, buffer); </code></pre>
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    1. USJerry Nixon - MSFT
    1. USGerald Degeneve
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    1. COThanks very much, it is late so I will try it tomorrow. the hint with getiputstremat and datareader seems very helpful.
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      1. USbasilius
    2. COThanks very much. I will try it tomorrow because it is late. The hint with getinputstreamat and datareader seems very helpful. On winrt system.io.filestream is not available. Basilius
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    3. COI Updated my answer. I thought you used winrt part of a desktop application, you were not particularily specific ;)
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