HttpClient: The uri string is too long

Question

Given the following attempt to post data to a web service that generates PDF files, PDF rocket (which is awesome by the way).

I get the err

Answer 1

@Mick Byrne : Thanks - your solution worked like a charme!

Here is my complete code:

      public async Task DateienSendenAsync (string PfadUndDatei, string Dateiname, String VRPinGUID, String ProjektGUID, String VRPinX, String VRPinY, String VRPinZ)
    {
        var client = new HttpClient();
        // Create the HttpContent for the form to be posted.
        var requestContent = new[] {
                            new KeyValuePair("dateiname", Dateiname),

                            new KeyValuePair("bild", Convert.ToBase64String(File.ReadAllBytes(PfadUndDatei))),
                            new KeyValuePair("VRPinGUID", VRPinGUID),
                            new KeyValuePair("ProjektGUID", ProjektGUID),
                            new KeyValuePair("ebene", "ebene"),
                            new KeyValuePair("raumnummer", "raumnummer"),
                            new KeyValuePair("ansichtsname", "ansichtsname"),
                            new KeyValuePair("VRPinX", VRPinX),
                            new KeyValuePair("VRPinY", VRPinY),
                            new KeyValuePair("VRPinZ", VRPinZ),

                            };

        String url = "http://yourhomepage/path/upload.php";

        var encodedItems = requestContent.Select(i => WebUtility.UrlEncode(i.Key) + "=" + WebUtility.UrlEncode(i.Value));
        var encodedContent = new StringContent(String.Join("&", encodedItems), null, "application/x-www-form-urlencoded");

        // Post away!
        var response = await client.PostAsync(url, encodedContent);



    }