Sends a POST request with a cancellation token as an asynchronous operation.
Namespace:  System.Net.Http
Assembly:  System.Net.Http (in System.Net.Http.dll)
Syntax
'Declaration
Public Function PostAsync ( _
    requestUri As String, _
    content As HttpContent, _
    cancellationToken As CancellationToken _
) As Task(Of HttpResponseMessage)
'Usage
Dim instance As HttpClient 
Dim requestUri As String 
Dim content As HttpContent 
Dim cancellationToken As CancellationToken 
Dim returnValue As Task(Of HttpResponseMessage)
returnValue = instance.PostAsync(requestUri, _
    content, cancellationToken)
public Task<HttpResponseMessage> PostAsync(
    string requestUri,
    HttpContent content,
    CancellationToken cancellationToken
)
public:
Task<HttpResponseMessage^>^ PostAsync(
    String^ requestUri, 
    HttpContent^ content, 
    CancellationToken cancellationToken
)
member PostAsync : 
        requestUri:string * 
        content:HttpContent * 
        cancellationToken:CancellationToken -> Task<HttpResponseMessage> 
public function PostAsync(
    requestUri : String, 
    content : HttpContent, 
    cancellationToken : CancellationToken
) : Task<HttpResponseMessage>
Parameters
- requestUri
Type: System.String
The Uri the request is sent to. 
- content
Type: System.Net.Http.HttpContent
The HTTP request content sent to the server. 
- 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<HttpResponseMessage>
The task object representing the asynchronous operation.
Remarks
This operation will not block. The returned task object will complete after the whole response (including content) is read.
For a complete example of using the HttpClient class, see Calling a Web API From a .NET Client