DataLakePathClient.ExistsAsync(CancellationToken) Method

Reference

Definition

Namespace:: Azure.Storage.Files.DataLake

Assembly:: Azure.Storage.Files.DataLake.dll

Package:: Azure.Storage.Files.DataLake v12.17.1

Package:: Azure.Storage.Files.DataLake v12.18.0-beta.2

Source:: DataLakePathClient.cs

Source:: DataLakePathClient.cs

Important

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The ExistsAsync(CancellationToken) operation can be called on a DataLakePathClient to see if the associated file or directory exists in the file system.

public virtual System.Threading.Tasks.Task<Azure.Response<bool>> ExistsAsync (System.Threading.CancellationToken cancellationToken = default);

abstract member ExistsAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<bool>>
override this.ExistsAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task<Azure.Response<bool>>

Public Overridable Function ExistsAsync (Optional cancellationToken As CancellationToken = Nothing) As Task(Of Response(Of Boolean))

Parameters

cancellationToken: CancellationToken

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

Returns

Task<Response<Boolean>>

Returns true if the file or directory exists.

Remarks

A RequestFailedException will be thrown if a failure occurs. If you want to create the file system if it doesn't exist, use CreateIfNotExistsAsync(PathResourceType, DataLakePathCreateOptions, CancellationToken) instead.

Applies to