/// <summary> /// Single put file and get file /// </summary> /// <param name="fileSize">The file size.</param> /// <param name="bufferSize">The output buffer size.</param> /// <param name="bufferOffset">The output buffer offset.</param> /// <param name="fileOffset">The file offset.</param> /// <param name="length">Length of the data range to download.</param> /// <param name="option">0 - Sync, 1 - APM and 2 - APM overload.</param> private void DoDownloadRangeToByteArray(CloudFile file, int fileSize, int bufferSize, int bufferOffset, long? fileOffset, long? length, int option) { int downloadLength; byte[] buffer = GetRandomBuffer(fileSize); byte[] resultBuffer = new byte[bufferSize]; byte[] resultBuffer2 = new byte[bufferSize]; using (MemoryStream originalFile = new MemoryStream(buffer)) { if (option == 0) { file.UploadFromStream(originalFile); downloadLength = file.DownloadRangeToByteArray(resultBuffer, bufferOffset, fileOffset, length); } else if (option == 1) { using (AutoResetEvent waitHandle = new AutoResetEvent(false)) { ICancellableAsyncResult result = file.BeginUploadFromStream(originalFile, ar => waitHandle.Set(), null); waitHandle.WaitOne(); file.EndUploadFromStream(result); result = file.BeginDownloadRangeToByteArray(resultBuffer, bufferOffset, fileOffset, length, ar => waitHandle.Set(), null); waitHandle.WaitOne(); downloadLength = file.EndDownloadRangeToByteArray(result); } } else { using (AutoResetEvent waitHandle = new AutoResetEvent(false)) { ICancellableAsyncResult result = file.BeginUploadFromStream(originalFile, ar => waitHandle.Set(), null); waitHandle.WaitOne(); file.EndUploadFromStream(result); OperationContext context = new OperationContext(); result = file.BeginDownloadRangeToByteArray(resultBuffer, bufferOffset, fileOffset, length, null, null, context, ar => waitHandle.Set(), null); waitHandle.WaitOne(); downloadLength = file.EndDownloadRangeToByteArray(result); } } int downloadSize = Math.Min(fileSize - (int)(fileOffset.HasValue ? fileOffset.Value : 0), bufferSize - bufferOffset); if (length.HasValue && (length.Value < downloadSize)) { downloadSize = (int)length.Value; } Assert.AreEqual(downloadSize, downloadLength); for (int i = 0; i < bufferOffset; i++) { Assert.AreEqual(0, resultBuffer[i]); } for (int j = 0; j < downloadLength; j++) { Assert.AreEqual(buffer[(fileOffset.HasValue ? fileOffset.Value : 0) + j], resultBuffer[bufferOffset + j]); } for (int k = bufferOffset + downloadLength; k < bufferSize; k++) { Assert.AreEqual(0, resultBuffer[k]); } } }