Storage Client Library for Windows Phone (Version 7.0)

Begins an asynchronous request to check existence of the blob.

Namespace:   Microsoft.WindowsAzure.Storage.Blob
Assembly:  Microsoft.WindowsAzure.Storage (in Microsoft.WindowsAzure.Storage.dll)

Syntax

C#

Copy Code

 

[DoesServiceRequestAttribute]
public virtual ICancellableAsyncResult BeginExists(
	BlobRequestOptions options,
	OperationContext operationContext,
	AsyncCallback callback,
	object state
)

C++

Copy Code

 

public:
[DoesServiceRequestAttribute]
virtual ICancellableAsyncResult^ BeginExists(
	BlobRequestOptions^ options,
	OperationContext^ operationContext,
	AsyncCallback^ callback,
	Object^ state
)

F#

Copy Code

 

[<DoesServiceRequestAttribute>]
abstract BeginExists : 
        options:BlobRequestOptions *
        operationContext:OperationContext *
        callback:AsyncCallback *
        state:Object -> ICancellableAsyncResult
[<DoesServiceRequestAttribute>]
override BeginExists : 
        options:BlobRequestOptions *
        operationContext:OperationContext *
        callback:AsyncCallback *
        state:Object -> ICancellableAsyncResult

VB

Copy Code

 

<DoesServiceRequestAttribute>
Public Overridable Function BeginExists (
	options As BlobRequestOptions,
	operationContext As OperationContext,
	callback As AsyncCallback,
	state As Object
) As ICancellableAsyncResult

Parameters

options

Type: Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptionsMicrosoft.WindowsAzure.Storage.Blob::BlobRequestOptions^Microsoft.WindowsAzure.Storage.Blob.BlobRequestOptionsMicrosoft.WindowsAzure.Storage.Blob.BlobRequestOptions

A BlobRequestOptions object that specifies additional options for the request.

operationContext

Type: Microsoft.WindowsAzure.Storage.OperationContextMicrosoft.WindowsAzure.Storage::OperationContext^Microsoft.WindowsAzure.Storage.OperationContextMicrosoft.WindowsAzure.Storage.OperationContext

An OperationContext object that represents the context for the current operation.

callback

Type: System.AsyncCallbackSystem::AsyncCallback^System.AsyncCallbackSystem.AsyncCallback

An AsyncCallback delegate that will receive notification when the asynchronous operation completes.

state

Type: System.ObjectSystem::Object^System.ObjectSystem.Object

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

Return Value

Type: Microsoft.WindowsAzure.Storage.ICancellableAsyncResultMicrosoft.WindowsAzure.Storage::ICancellableAsyncResult^Microsoft.WindowsAzure.Storage.ICancellableAsyncResultMicrosoft.WindowsAzure.Storage.ICancellableAsyncResult

An ICancellableAsyncResult that references the asynchronous operation.

See Also

BeginExists Overload
CloudBlob Class
Microsoft.WindowsAzure.Storage.Blob Namespace

Return to top