public void FileUploadRequest()
        {
            Console.WriteLine("FileUploadRequest");
            DnaTestURLRequest request = new DnaTestURLRequest("haveyoursay");

            Queue<KeyValuePair<string, string>> postparams = new Queue<KeyValuePair<string, string>>();
            postparams.Enqueue(new KeyValuePair<string, string>("skin", "purexml"));
            postparams.Enqueue(new KeyValuePair<string, string>("s_param", "1,1"));
            postparams.Enqueue(new KeyValuePair<string, string>("s_param", "2,2"));
            postparams.Enqueue(new KeyValuePair<string, string>("s_param", "3,3"));
            
            string uploadfile;// set to file to upload
            uploadfile = GetTestFile();

            //everything except upload file and url can be left blank if needed
            request.UploadFileEx(uploadfile, "acs", "image/jpeg",postparams,new CookieContainer());


            //Check Parameters parsed OK.
            string paramvalue = "1,1,2,2,3,3";
            XmlDocument doc = request.GetLastResponseAsXML();
            DnaXmlValidator validator = new DnaXmlValidator(doc.InnerXml, "H2G2CommentBoxFlat.xsd");
            validator.Validate();

            validator = new DnaXmlValidator(doc.SelectSingleNode(@"H2G2/PARAMS").OuterXml, "Params.xsd");
            validator.Validate();

            XmlNodeList nodes = doc.SelectNodes(@"H2G2/PARAMS/PARAM");
            foreach (XmlNode node in nodes)
            {
                Assert.AreEqual(paramvalue, node.SelectSingleNode("VALUE").InnerText);
            }
        }