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CloudBlob.BeginDelete Method (AsyncCallback, Object)

Updated: April 24, 2013

[This topic is part of the Windows Azure Storage Client Library 1.7, which has been deprecated. The current recommended version is Storage Client Library 3.0.]

Begins an asynchronous operation to delete the blob.

Namespace: Microsoft.WindowsAzure.StorageClient
Assembly: Microsoft.WindowsAzure.StorageClient (in Microsoft.WindowsAzure.StorageClient.dll)

'Gebruik

public IAsyncResult BeginDelete (
	AsyncCallback callback,
	Object state
)

Parameters

callback

Type: System.AsyncCallback

The callback delegate that will receive notification when the asynchronous operation completes.

state

Type: System.Object

A user-defined object that will be passed to the callback delegate.

Return Value

Type: System.IAsyncResult

An IAsyncResult that references the asynchronous operation.

The following code example creates a blob reference, then instantiates it in the cloud by uploading the contents of a local text file to it, and finally deletes it — using an asynchronous request.


static void Eg_BeginDeleteBlob1(Uri blobEndpoint, string accountName, string accountKey)
{
    // Create a service client for credentialed access to the Blob service.
    CloudBlobClient blobClient =
        new CloudBlobClient(blobEndpoint,
            new StorageCredentialsAccountAndKey(accountName, accountKey));

    // Create a blob reference.
    CloudBlob myBlob = blobClient.GetBlobReference("mycontainer/myblob.txt");

    // Use the blob reference to create and initialize an actual blob in the cloud.
    myBlob.UploadFile("C:\\somefile.txt");

    // Delete the blob using an asynchronous call.
    myBlob.BeginDelete(Eg_DeleteCallback, myBlob);
}

private void Eg_DeleteCallback(IAsyncResult result)
{
    CloudBlob blobToDelete = (CloudBlob)result.AsyncState;
    blobToDelete.EndDelete(result);
}

A blob that has snapshots cannot be deleted unless the snapshots are also deleted. If a blob has snapshots, specify the options parameter, setting the DeleteSnapshotsOption property to specify how the snapshots should be handled when the blob is deleted.

The BeginDelete method will fail if the blob does not exist. To delete the blob only if it exists, use the BeginDeleteIfExists method.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Windows Vista, Windows 7 and Windows Server 2008

Target Platforms

Weergeven:
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