// Create a snapshot of a blob.
// Return true on success, false if unable to create, throw exception on error.
public bool SnapshotBlob(string containerName, string blobName)
{
try
{
CloudBlobContainer container = BlobClient.GetContainerReference(containerName);
CloudBlob blob = container.GetBlobReference(blobName);
blob.CreateSnapshot();
return(true);
}
catch (StorageClientException ex)
{
if ((int)ex.StatusCode == 404)
{
return(false);
}
throw;
}
}
/// <summary>
/// Get Cloud Data
/// </summary>
/// <returns>Data for object</returns>
public byte[] GetData()
{
var bytes = this.blob.DownloadByteArray();
if (string.IsNullOrWhiteSpace(this.MD5))
{
using (var createHash = System.Security.Cryptography.MD5.Create())
{
var hash = createHash.ComputeHash(bytes);
this.MD5 = System.Convert.ToBase64String(hash);
}
if (createSnapShot)
{
blob.CreateSnapshot();
}
blob.Properties.ContentMD5 = this.MD5;
this.blob.Metadata[MD5MetadataKey] = this.MD5;
this.blob.SetMetadata();
}
return(bytes);
}