Copying one Azure blob to another blob in Azure Storage Client 2.0

Question

In the old 1.7 storage client there was a CloudBlob.CopyFromBlob(otherBlob) method, but it does not seem to be present in the 2.0 version. What is the recommended best practice for copying blobs? I do see a ICloudBlob.BeginStartCopyFromBlob method. If that is the appropriate method, how do I use it?

Answer 1

Gaurav Mantri has written a series of articles on Azure Storage on version 2.0. I have taken this code extract from his blog post of Storage Client Library 2.0 – Migrating Blob Storage Code for Blob Copy

CloudStorageAccount storageAccount = new CloudStorageAccount(new StorageCredentials(accountName, accountKey), true); CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient(); CloudBlobContainer sourceContainer = cloudBlobClient.GetContainerReference(containerName); CloudBlobContainer targetContainer = cloudBlobClient.GetContainerReference(targetContainerName); string blobName = "<Blob Name e.g. myblob.txt>"; CloudBlockBlob sourceBlob = sourceContainer.GetBlockBlobReference(blobName); CloudBlockBlob targetBlob = targetContainer.GetBlockBlobReference(blobName); targetBlob.StartCopyFromBlob(sourceBlob); 

Answer 2

Using Storage 6.3 (much newer library than in original question) and async methods use StartCopyAsync (MSDN)

  CloudStorageAccount storageAccount = CloudStorageAccount.Parse("Your Connection");    CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();   CloudBlobContainer container = blobClient.GetContainerReference("YourContainer");    CloudBlockBlob source = container.GetBlockBlobReference("Your Blob");   CloudBlockBlob target = container.GetBlockBlobReference("Your New Blob");            await target.StartCopyAsync(source);