是否可以在.NET Frame work 2.0中实现Auth 2.0？

Question

我想在> net Framework 2.0中实现AUth 2.0。执行授权时出现错误。 我已经尝试了下面的代码，但是给出了错误“ 404 Not found”。

    Dim strExchange = "response_type=authorization_code"
    strExchange += "&redirect_uri=http://localhost:49366/Default.aspx"
    strExchange += "&client_id=********"
    strExchange += "&scope=connectapi.*****"     
    strExchange += "&client_secret=******&grant_type=authorization_code"


    Dim url As String = "https://dev-auth.test.com/connect/authorize?"
    Dim tokenurl As String = "https://dev-auth.test.com/connect/token?"
    Dim webClient As New System.Net.WebClient

    System.Net.ServicePointManager.SecurityProtocol = DirectCast(3072, 
    SecurityProtocolType)      

    Dim result As String = webClient.DownloadString(url & strExchange)

    Response.Write(result)