HTTP Upload: 404 Not Found

For uploading a file to an HTTP server, I am following the example at https://www.example-code.com/csharp_winrt/http_multipart_form_data_upload.asp

I am getting a 404 Not Found error in the http.SynchronousRequestAsync() method.

I think it is due to an incorrect setting of httpRequest.Path property. In your example you set it as req.Path = "rcvFormDataUpload.aspx";

I simply want to upload the file on mobile to server at a location -> server = xxx.xxx.xxx.xxx folder on server = webshare and destination file name = something.bin.

What value do i need to set in req.Path? I am using an IIS server for testing, and I don't have any .aspx page.