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HttpClient.SendAsync Method (HttpRequestMessage, HttpCompletionOption, CancellationToken)

Sends an HTTP request with an HTTP completion option and cancellation token as an asynchronous operation.

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

'Declaration
Public Function SendAsync ( _
	request As HttpRequestMessage, _
	completionOption As HttpCompletionOption, _
	cancellationToken As CancellationToken _
) As Task(Of HttpResponseMessage)
'Usage
Dim instance As HttpClient 
Dim request As HttpRequestMessage 
Dim completionOption As HttpCompletionOption 
Dim cancellationToken As CancellationToken 
Dim returnValue As Task(Of HttpResponseMessage)

returnValue = instance.SendAsync(request, _
	completionOption, cancellationToken)

Parameters

request
Type: System.Net.Http.HttpRequestMessage
The HTTP request message to send.
completionOption
Type: System.Net.Http.HttpCompletionOption
An HTTP completion option value that indicates when the operation should be considered completed.
cancellationToken
Type: System.Threading.CancellationToken
A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Return Value

Type: System.Threading.Tasks.Task(Of HttpResponseMessage)
The task object representing the asynchronous operation.

This operation will not block. The returned task object will complete once the entire response including content is read.

For a complete example of using the HttpClient class, see Calling a Web API From a .NET Client

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