Set Proxy To Webbrowser in c#

private void SetProxyToBrowser(WebBrowser iWB)

        {

            try

            {

                string ProxyEmail = "" ;

                string ProxyPass = "" ;

                string ProxyUID = "" ;

                string ProxyUPass = "" ;

                string ProxyIp = "" ;

                int ProxyPort = 0;

                ProxyIp = "Proxy IP";

                ProxyPort = Proxy Port;

                ProxyUID = "Proxy User ID"; // IF You Have

                ProxyUPass = "Proxy User Password"; // IF You Have

                ProxyEmail = "Proxy Email ID";

                ProxyPass = "Proxy Email Password";

                Application.DoEvents();

                HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest .Create(SignInAddress);

                WebProxy myProxy = new WebProxy(ProxyIp, ProxyPort);

                if (ProxyUID.Trim() != "" && ProxyUPass.Trim() != "")

                    myProxy.Credentials = new NetworkCredential (ProxyUID, ProxyUPass);

                myRequest.Proxy = myProxy;

                HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

                iWB.DocumentStream = myResponse.GetResponseStream();

            }

            catch

            {

                //Code...

            }

        }