How do I get the content from an HTTPclient POST in VB.NET?

How do I get the content from an HTTPclient POST in VB.NET?

Here is what I have tried so for in my Winform Application.  In this example, I am trying to send 2 values, and I want to send the result to "responseString".
        Dim client As HttpClient = New HttpClient

        Dim values As New Dictionary(Of String, String) From {{"Input1", "hello"}, {"Input2", "world"}}
        Dim content As Object = New FormUrlEncodedContent(values)
        Dim response As Task(Of HttpResponseMessage) = client.PostAsync("http://www.website.com/webform.aspx", content)
        Dim responseString As String = response.Content.ReadAsStringAsync
        MessageBox.Show(responseString)

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I am currently getting my error at "response.content", probably becuase I am not sure how to handle a "Task(Of HttpResponseMessage)":
Dim responseString As String = response.Content.ReadAsStringAsync

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BTW, the above code is what I cobbled together from websearches, but if I the amount of data expected is relatively small, perhaps it would be easier to come with a solution that isn't asynchronous?
eeyoAsked:
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eeyoAuthor Commented:
I have also tried webclient as well, but no luck.  Here is the website form:
    <input name="Input1" type="text" id="MainContent_txtInput1" />
    <input name="Input2 type="text" id="MainContent_txtInput2 " />
    <input type="submit" name="ctl00$MainContent$Submit" value="Button" id="MainContent_Submit" />
    <span id="MainContent_lblNumber">Label</span>

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Here is the vb.net code.  The responseInString text is the same.  Doesn't seem to be changed by the input1 or input2 values.
        Dim wb = New WebClient
        Dim data As New NameValueCollection()
        data("Input1") = "hello"
        data("Input2") = "world"
        Dim response = wb.UploadValues("http://localhost:64641/Default", "POST", data)
        Dim responseInString As String = Encoding.UTF8.GetString(response)
        txtResult.Text = responseInString

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eeyoAuthor Commented:
I think I figured this out.  POST doesn't seem to interact direct with the HTML form inputs.  It looks you can use use arbitrary variables such as "Input1" and "Input2".  From ASP.NET website, you can access the "Input1" and "Input2" by using:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    ......Request.Form("Input1")
    ..... Request.Form("Input2")
End Sub

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Visual Basic.NET

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