System.Net.WebClient.UploadStringAsync C# (CSharp) Method

        public void UploadStringAsync(System.Uri address, string data) { }
        public void UploadStringAsync(System.Uri address, string method, string data) { }

        public static string DELETE(string uri, IDictionary<string, string> args)
        {
            try {
                WebClient client = new WebClient();

                client.Encoding = Encoding.UTF8;

                client.Headers["Connection"] = "Keep-Alive";
                StringBuilder formattedParams = new StringBuilder();

                IDictionary<string, string> parameters = new Dictionary<string, string>();

                foreach (var arg in args)
                {
                    parameters.Add(arg.Key, arg.Value);
                    formattedParams.AppendFormat("{0}={{{1}}}", arg.Key, arg.Key);
                }

                //Formatted URI
                Uri baseUri = new Uri(uri);

                client.UploadStringCompleted += new UploadStringCompletedEventHandler(client_UploadStringCompletedDelete);

                client.UploadStringAsync(baseUri, "DELETE", string.Empty);
                allDone.Reset();
                allDone.WaitOne();

                return requestResult;
            }
            catch (WebException ex) {
                return ReadResponse(ex.Response.GetResponseStream());
            }
        }