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CloudBlob.ExistsAsync Method

Definition

Overloads

ExistsAsync()

Initiates an asynchronous operation to check existence of the blob.

ExistsAsync(CancellationToken)

Initiates an asynchronous operation to check existence of the blob.

ExistsAsync(BlobRequestOptions, OperationContext)

Initiates an asynchronous operation to check existence of the blob.

ExistsAsync(BlobRequestOptions, OperationContext, CancellationToken)

Initiates an asynchronous operation to check existence of the blob.

ExistsAsync(Boolean, BlobRequestOptions, OperationContext, CancellationToken)

Initiates an asynchronous operation to check existence of the blob.

ExistsAsync()

Initiates an asynchronous operation to check existence of the blob.

[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<bool> ExistsAsync ();
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member ExistsAsync : unit -> System.Threading.Tasks.Task<bool>
override this.ExistsAsync : unit -> System.Threading.Tasks.Task<bool>
Public Overridable Function ExistsAsync () As Task(Of Boolean)

Returns

A Task<TResult> object of type bool that represents the asynchronous operation.

Attributes

Applies to

ExistsAsync(CancellationToken)

Initiates an asynchronous operation to check existence of the blob.

[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<bool> ExistsAsync (System.Threading.CancellationToken cancellationToken);
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member ExistsAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
override this.ExistsAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
Public Overridable Function ExistsAsync (cancellationToken As CancellationToken) As Task(Of Boolean)

Parameters

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for a task to complete.

Returns

A Task<TResult> object of type bool that represents the asynchronous operation.

Attributes

Applies to

ExistsAsync(BlobRequestOptions, OperationContext)

Initiates an asynchronous operation to check existence of the blob.

[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<bool> ExistsAsync (Microsoft.Azure.Storage.Blob.BlobRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext);
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member ExistsAsync : Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext -> System.Threading.Tasks.Task<bool>
override this.ExistsAsync : Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext -> System.Threading.Tasks.Task<bool>
Public Overridable Function ExistsAsync (options As BlobRequestOptions, operationContext As OperationContext) As Task(Of Boolean)

Parameters

options
BlobRequestOptions

A BlobRequestOptions object that specifies additional options for the request.

operationContext
OperationContext

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

Returns

A Task<TResult> object of type bool that represents the asynchronous operation.

Attributes

Applies to

ExistsAsync(BlobRequestOptions, OperationContext, CancellationToken)

Initiates an asynchronous operation to check existence of the blob.

[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<bool> ExistsAsync (Microsoft.Azure.Storage.Blob.BlobRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext, System.Threading.CancellationToken cancellationToken);
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member ExistsAsync : Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
override this.ExistsAsync : Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
Public Overridable Function ExistsAsync (options As BlobRequestOptions, operationContext As OperationContext, cancellationToken As CancellationToken) As Task(Of Boolean)

Parameters

options
BlobRequestOptions

A BlobRequestOptions object that specifies additional options for the request.

operationContext
OperationContext

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

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for a task to complete.

Returns

A Task<TResult> object of type bool that represents the asynchronous operation.

Attributes

Applies to

ExistsAsync(Boolean, BlobRequestOptions, OperationContext, CancellationToken)

Initiates an asynchronous operation to check existence of the blob.

[Microsoft.Azure.Storage.DoesServiceRequest]
public virtual System.Threading.Tasks.Task<bool> ExistsAsync (bool primaryOnly, Microsoft.Azure.Storage.Blob.BlobRequestOptions options, Microsoft.Azure.Storage.OperationContext operationContext, System.Threading.CancellationToken cancellationToken);
[<Microsoft.Azure.Storage.DoesServiceRequest>]
abstract member ExistsAsync : bool * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
override this.ExistsAsync : bool * Microsoft.Azure.Storage.Blob.BlobRequestOptions * Microsoft.Azure.Storage.OperationContext * System.Threading.CancellationToken -> System.Threading.Tasks.Task<bool>
Public Overridable Function ExistsAsync (primaryOnly As Boolean, options As BlobRequestOptions, operationContext As OperationContext, cancellationToken As CancellationToken) As Task(Of Boolean)

Parameters

primaryOnly
Boolean

If true, the command will be executed against the primary location.

options
BlobRequestOptions

A BlobRequestOptions object that specifies additional options for the request.

operationContext
OperationContext

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

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for a task to complete.

Returns

A Task<TResult> object of type bool that represents the asynchronous operation.

Attributes

Applies to