how Can I consume a WebService in C#?

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C#

webservice

Hi,

I'm having troubles consuming a webservice.
The WS that I must consume works in two fases, first I must consume a simpler one, this I manage with this code:

public String ConectaWebService(String user, String pass, String tipo, String ip)
{
    var HtmlResult = "";
    var token = "";

    var URL = "myWebService";
    var myParameters = "login=" + user + "&password=" + pass + "&tipo=" + tipo;

    try
    {
        var wc = new WebClient();
        wc.Headers["Content-type"] = "application/x-www-form-urlencoded";
        HtmlResult = wc.UploadString(URL, myParameters);

        var start = HtmlResult.IndexOf("<auth-token>") + 12;
        var end = HtmlResult.IndexOf("</auth-token>", start);

        token = HtmlResult.Substring(start, end - start);
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.ToString());
    }

    return token;
}

This will return a XML with a token inside, this is ok too.

But after that I must consume another webservice, where I realy create the information that I want but I really didn't manage, I try several ways but nothing.

I try with HttpWebRequest, WebRequest and WebClient but without sucess.
It just didn't answer and says that the limet time is finish.

The things that I know is that is POST and the Content-type is application/x-www-form-urlencoded. I must send some parameters too, but not through the URL, It must be encoded with UTF8 and sent.

Please, can anyone help me?

Thanks a lot.

Raimundo