HttpClient.SendAsync Method (HttpRequestMessage, CancellationToken)

.NET Framework 4.5

Send an HTTP request as an asynchronous operation.

Namespace:  System.Net.Http
Assembly:  System.Net.Http (in System.Net.Http.dll)

public override Task<HttpResponseMessage> SendAsync(
	HttpRequestMessage request,
	CancellationToken cancellationToken
)

Parameters

request
Type: System.Net.Http.HttpRequestMessage

The HTTP request message to send.

cancellationToken
Type: System.Threading.CancellationToken

The cancellation token to cancel operation.

Return Value

Type: System.Threading.Tasks.Task<HttpResponseMessage>
Returns Task<TResult>.
The task object representing the asynchronous operation.

ExceptionCondition
ArgumentNullException

The request was null.

InvalidOperationException

The request message was already sent by the HttpClient instance.

This operation will not block. The returned Task<TResult> object will complete once the entire response including content is read.

.NET Framework

Supported in: 4.5

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1

Windows Phone 8.1, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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