AppendBlobClient.CreateIfNotExistsAsync Method

Reference

Definition

Namespace:: Azure.Storage.Blobs.Specialized

Assembly:: Azure.Storage.Blobs.dll

Package:: Azure.Storage.Blobs v12.23.0

Package:: Azure.Storage.Blobs v12.23.0-beta.2

Source:: AppendBlobClient.cs

Source:: AppendBlobClient.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

The CreateIfNotExistsAsync(AppendBlobCreateOptions, CancellationToken) operation creates a new 0-length append blob. If the append blob already exists, the content of the existing append blob will remain unchanged. To add content to the append blob, call the Azure.Storage.Blobs.Specialized.AppendBlobClient.AppendBlockAsync(System.IO.Stream,System.Byte[],Azure.Storage.Blobs.Models.AppendBlobRequestConditions,System.IProgress{System.Int64},System.Threading.CancellationToken) operation.

For more information, see Put Blob.

public virtual System.Threading.Tasks.Task<Azure.Response<Azure.Storage.Blobs.Models.BlobContentInfo>> CreateIfNotExistsAsync (Azure.Storage.Blobs.Models.AppendBlobCreateOptions options, System.Threading.CancellationToken cancellationToken = default);

abstract member CreateIfNotExistsAsync : Azure.Storage.Blobs.Models.AppendBlobCreateOptions * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<Azure.Storage.Blobs.Models.BlobContentInfo>>
override this.CreateIfNotExistsAsync : Azure.Storage.Blobs.Models.AppendBlobCreateOptions * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<Azure.Storage.Blobs.Models.BlobContentInfo>>

Public Overridable Function CreateIfNotExistsAsync (options As AppendBlobCreateOptions, Optional cancellationToken As CancellationToken = Nothing) As Task(Of Response(Of BlobContentInfo))

Parameters

options: AppendBlobCreateOptions

Optional parameters.

cancellationToken: CancellationToken

Optional CancellationToken to propagate notifications that the operation should be cancelled.

Returns

Task<Response<BlobContentInfo>>

If the append blob does not already exist, a Response<T> describing the newly created append blob. Otherwise, null.

Remarks

A RequestFailedException will be thrown if a failure occurs.

Applies to

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