本文整理汇总了C#中Microsoft.WindowsAzure.Storage.Blob.CloudBlob.DownloadRangeToByteArray方法的典型用法代码示例。如果您正苦于以下问题：C# CloudBlob.DownloadRangeToByteArray方法的具体用法？C# CloudBlob.DownloadRangeToByteArray怎么用？C# CloudBlob.DownloadRangeToByteArray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.Blob.CloudBlob的用法示例。
在下文中一共展示了CloudBlob.DownloadRangeToByteArray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: CloudBlobSASIPAddressHelper
/// <summary>
/// Helper function for testing the IPAddressOrRange funcitonality for blobs
/// </summary>
/// <param name="generateInitialIPAddressOrRange">Function that generates an initial IPAddressOrRange object to use. This is expected to fail on the service.</param>
/// <param name="generateFinalIPAddressOrRange">Function that takes in the correct IP address (according to the service) and returns the IPAddressOrRange object
/// that should be accepted by the service</param>
public void CloudBlobSASIPAddressHelper(Func<IPAddressOrRange> generateInitialIPAddressOrRange, Func<IPAddress, IPAddressOrRange> generateFinalIPAddressOrRange)
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudBlob blob;
SharedAccessBlobPolicy policy = new SharedAccessBlobPolicy()
{
Permissions = SharedAccessBlobPermissions.Read,
SharedAccessStartTime = DateTimeOffset.UtcNow.AddMinutes(-5),
SharedAccessExpiryTime = DateTimeOffset.UtcNow.AddMinutes(30),
};
CloudBlockBlob blockBlob = container.GetBlockBlobReference("bb");
byte[] data = new byte[] { 0x1, 0x2, 0x3, 0x4 };
blockBlob.UploadFromByteArray(data, 0, 4);
// The plan then is to use an incorrect IP address to make a call to the service
// ensure that we get an error message
// parse the error message to get my actual IP (as far as the service sees)
// then finally test the success case to ensure we can actually make requests
IPAddressOrRange ipAddressOrRange = generateInitialIPAddressOrRange();
string blockBlobToken = blockBlob.GetSharedAccessSignature(policy, null, null, null, ipAddressOrRange);
StorageCredentials blockBlobSAS = new StorageCredentials(blockBlobToken);
Uri blockBlobSASUri = blockBlobSAS.TransformUri(blockBlob.Uri);
StorageUri blockBlobSASStorageUri = blockBlobSAS.TransformUri(blockBlob.StorageUri);
blob = new CloudBlob(blockBlobSASUri);
byte[] target = new byte[4];
OperationContext opContext = new OperationContext();
IPAddress actualIP = null;
opContext.ResponseReceived += (sender, e) =>
{
Stream stream = e.Response.GetResponseStream();
stream.Seek(0, SeekOrigin.Begin);
using (StreamReader reader = new StreamReader(stream))
{
string text = reader.ReadToEnd();
XDocument xdocument = XDocument.Parse(text);
actualIP = IPAddress.Parse(xdocument.Descendants("SourceIP").First().Value);
}
};
bool exceptionThrown = false;
try
{
blob.DownloadRangeToByteArray(target, 0, 0, 4, null, null, opContext);
}
catch (StorageException)
{
exceptionThrown = true;
Assert.IsNotNull(actualIP);
}
Assert.IsTrue(exceptionThrown);
ipAddressOrRange = generateFinalIPAddressOrRange(actualIP);
blockBlobToken = blockBlob.GetSharedAccessSignature(policy, null, null, null, ipAddressOrRange);
blockBlobSAS = new StorageCredentials(blockBlobToken);
blockBlobSASUri = blockBlobSAS.TransformUri(blockBlob.Uri);
blockBlobSASStorageUri = blockBlobSAS.TransformUri(blockBlob.StorageUri);
blob = new CloudBlob(blockBlobSASUri);
blob.DownloadRangeToByteArray(target, 0, 0, 4, null, null, null);
for (int i = 0; i < 4; i++)
{
Assert.AreEqual(data[i], target[i]);
}
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(blockBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = new CloudBlob(blockBlobSASStorageUri, null, null);
blob.DownloadRangeToByteArray(target, 0, 0, 4, null, null, null);
for (int i = 0; i < 4; i++)
{
Assert.AreEqual(data[i], target[i]);
}
Assert.IsTrue(blob.StorageUri.Equals(blockBlob.StorageUri));
}
finally
{
container.DeleteIfExists();
}
}