ICloudBlob.BeginExists Method (BlobRequestOptions, OperationContext, AsyncCallback, Object) (Microsoft.WindowsAzure.Storage.Blob)
From Microsoft Windows Azure Storage Blob
C#
C++
F#
VB
ICloudBlob.::..BeginExists Method (BlobRequestOptions, OperationContext, AsyncCallback, Object)(BlobRequestOptions^, OperationContext^, AsyncCallback^, Object^)(BlobRequestOptions, OperationContext, AsyncCallback, Object)(BlobRequestOptions, OperationContext, AsyncCallback, Object)
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
ICancellableAsyncResult BeginExists(
BlobRequestOptions options,
OperationContext operationContext,
AsyncCallback callback,
object state
)C++ICancellableAsyncResult^ BeginExists(
BlobRequestOptions^ options,
OperationContext^ operationContext,
AsyncCallback^ callback,
Object^ state
)
abstract BeginExists :
options:BlobRequestOptions *
operationContext:OperationContext *
callback:AsyncCallback *
state:Object -> ICancellableAsyncResult
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.ICancellableAsyncResultAn ICancellableAsyncResult that references the asynchronous operation.
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Begins an asynchronous request to check existence of the blob.
Syntax
ICancellableAsyncResult BeginExists(
BlobRequestOptions options,
OperationContext operationContext,
AsyncCallback callback,
object state
)C++
ICancellableAsyncResult^ BeginExists( BlobRequestOptions^ options, OperationContext^ operationContext, AsyncCallback^ callback, Object^ state )
abstract BeginExists :
options:BlobRequestOptions *
operationContext:OperationContext *
callback:AsyncCallback *
state:Object -> ICancellableAsyncResultFunction 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.ICancellableAsyncResultAn ICancellableAsyncResult that references the asynchronous operation.