C# webclient and proxy server

Question

Hello,

I am using a web client class in my source code for downloading a string using http.

This was working fine. However, the clients in the company are all connected now to a proxy server. And the problem started from this.

When I have tested my application I don't think it can pass through the proxy server, as the exception that keeps getting thrown is "no response from xxx.xxx.xxx.xxx which is the proxy server IP address.

However, I can still navigate to the web site URL and it displays the string correctly in the browser when connecting through a proxy server, but not when I use my web client.

Is there something in the web client that I have to configure to allow me to access the url from behind a proxy server?

using (WebClient wc = new WebClient())
        {
            string strURL = "http://xxxxxxxxxxxxxxxxxxxxxxxx";

            //Download only when the webclient is not busy.
            if (!wc.IsBusy)
            {
                string rtn_msg = string.Empty;
                try
                {
                    rtn_msg = wc.DownloadString(new Uri(strURL));
                    return rtn_msg;
                }
                catch (WebException ex)
                {
                    Console.Write(ex.Message);
                    return false;
                }
                catch (Exception ex)
                {
                    Console.Write(ex.Message);
                    return false;
                }
            }
            else
            {
                System.Windows.Forms.MessageBox.Show("Busy please try again");
                return false;
            }
        }

Answer 1

You need to configure the proxy in the WebClient object.

See the WebClient.Proxy property:

http://msdn.microsoft.com/en-us/library/system.net.webclient.proxy(VS.80).aspx