Winform to ASPX Request.files.Allkeys is always zero

Question

I have seen this question many times on the web but never with simple code and clear answers
Below is my code of the winForm and the webASPX with no extraneous code
I am sure I am missing something
I am trying to send a file from a WinForm program to a web server and there are never any files
I get the beep but it never hits the stop
Request count is always zero

`

https://stackoverflow.com/questions/65666644/vb-net-uploadfile-request-files-allkeys-always-emptyWinForms code

Imports System.Net

Public Class Form1
Public ServerURL As String = "http://localhost:50918"

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim myWebClient As New WebClient
    Dim responseArray As Byte()
    Dim Filename As String = "C:\Temp\myfile.txt"

    responseArray = myWebClient.UploadFile(ServerURL & "/Webform1.aspx", Filename)

End Sub

End Class

Web Code

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WebForm1.aspx.vb" Inherits="WebApplication6.WebForm1" %>

Public Class WebForm1
Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Beep()
    Debug.Print(System.Web.HttpContext.Current.Request.Files.Count & " " & System.Web.HttpContext.Current.Request.Files.AllKeys.Count)
    For Each f As String In System.Web.HttpContext.Current.Request.Files.AllKeys
        Stop
    Next

End Sub

End Class

Answer

If .aspx does not work, then try writing an .ashx handler. Add a new item to your Web application — “Generic Handler”, Handler1.ashx.

The simplest implementation is:

Public Class Handler1
    Implements System.Web.IHttpHandler

    Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest

        Dim c1 = context.Request.Files.Count
        Dim c2 = context.Request.Files.AllKeys.Count
        context.Request.Files(0).SaveAs("C:\Temp\ReceivedFile.txt")


        context.Response.ContentType = "text/plain"
        context.Response.Write("Hello World!")

    End Sub

    ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property

End Class

Instead of Beep and Debug.Print you can put breakpoints and investigate the variables using Debugger.

Also adjust the client code:

responseArray = myWebClient.UploadFile(ServerURL & "/Handler1.ashx", Filename)

Answer

Thank you Viorel
That worked perfectly
The other version should have worked according to others but this is fine
As I understand it, the Handler is a non visible page allowing it to respond but not show anything at the web site
regards
Bill

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Winform to ASPX Request.files.Allkeys is always zero

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