本文整理汇总了C#中Microsoft.WindowsAzure.Storage.File.CloudFile.BeginDownloadRangeToByteArray方法的典型用法代码示例。如果您正苦于以下问题：C# CloudFile.BeginDownloadRangeToByteArray方法的具体用法？C# CloudFile.BeginDownloadRangeToByteArray怎么用？C# CloudFile.BeginDownloadRangeToByteArray使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Microsoft.WindowsAzure.Storage.File.CloudFile的用法示例。
在下文中一共展示了CloudFile.BeginDownloadRangeToByteArray方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DoDownloadRangeToByteArray
/// <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]);
}
}
}