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POSystem.ArgumentException when reading a file into a byte array
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  1. POSystem.ArgumentException when reading a file into a byte array
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    copied!<p>To upload a file using a <code>ByteArrayContent</code> for <code>HttpClient</code>i'm reading a <code>StorageFile</code> into a <code>byte</code> array. The code is working without problems with images, but its not working for files im generating through a <code>AudioVideoCaptureDevice</code>- even through the files are NOT empty which i double checked. *<em>It'll accessing the file in any way</em>:</p> <pre><code>byte[] data; StorageFolder folder = ApplicationData.Current.LocalFolder; try { Debug.WriteLine("uploading: "+ fileName); StorageFile file = await folder.GetFileAsync("data\\"+LocalPayload); var probs = await file.GetBasicPropertiesAsync(); Debug.WriteLine("path " + file.Path + "" + " size " + probs.Size); try { var stream = await file.OpenReadAsync(); using (var dataReader = new DataReader(stream)) { Debug.WriteLine("stream size is " + stream.Size); data = new byte[stream.Size]; await dataReader.LoadAsync((uint)stream.Size); dataReader.ReadBytes(data); } Debug.WriteLine("stream was read"); content = new ByteArrayContent(data); } catch (System.IO.FileNotFoundException e) { Debug.WriteLine("file not found", e.ToString()); return; } catch (Exception e) { Debug.WriteLine("could not create byte array for file: " + e.ToString()); return; } } catch (Exception e) { Debug.WriteLine("could not read file: " + e.ToString()); return; } </code></pre> <p>This is the exception</p> <pre><code>could not read file: System.ArgumentException: Value does not fall within the expected range. at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() at TestApp.Models.Item.&lt;Upload&gt;d__1f.MoveNext() </code></pre> <p>To Capture the file i'm first using to record sound</p> <pre><code>IStorageFolder applicationFolder = ApplicationData.Current.LocalFolder; var dataFolder = await applicationFolder.CreateFolderAsync("data", CreationCollisionOption.OpenIfExists); outputFile = await dataFolder.CreateFileAsync(audioFileName, CreationCollisionOption.ReplaceExisting); stream = await outputFile.OpenAsync(FileAccessMode.ReadWrite); await dev.StartRecordingToStreamAsync(stream); </code></pre> <p>and after some user interaction i'm calling</p> <pre><code>await dev.StopRecordingAsync(); Debug.WriteLine("stopped recording"); await stream.FlushAsync(); stream.Dispose(); </code></pre> <p>Any suggestions why some files are working and some are not?</p> <p>Thanks!</p> <p><strong>UPDATE</strong> added code for creating the file and the source of the folder</p> <p><strong>UPDATE2</strong> added code for surrounding try catch to read file size</p>
 

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