AppendBlobClient.CreateIfNotExistsAsync Method

Reference

Definition

Namespace:: Azure.Storage.Blobs.Specialized

Assembly:: Azure.Storage.Blobs.dll

Package:: Azure.Storage.Blobs v12.19.1

Package:: Azure.Storage.Blobs v12.20.0-beta.2

Source:: AppendBlobClient.cs

Source:: AppendBlobClient.cs

Important

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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