Send more than one post request

Question

I want to send multiply post requests to a website. I've search over Google and got to this code:

 class Program
{
    public static HttpWebRequest HttpWReq = (HttpWebRequest)WebRequest.Create("http://example.com/login.php");
    public static ASCIIEncoding encoding = new ASCIIEncoding();
    public static string postData = "";
    public static bool first = true;
    static void Main(string[] args)
    {
        string uname = "", pass = "", Final = "";

        while (1>0)
        {
            Console.WriteLine("Enter uname ,then password");
            uname = Console.ReadLine();
            pass = Console.ReadLine();
            if (uname == "0")
                break;
            Final = letstry(uname, pass);

            Console.WriteLine(Final);
            Console.WriteLine("Finish That");
        }
    }

    public static string letstry(string uname, string pass)
    {  
        postData = "uname=" + uname;
        postData += ("&pass=" + pass);
        byte[] data = encoding.GetBytes(postData);
        if (first)
        {
            HttpWReq.Method = "POST";
            HttpWReq.ContentType = "application/x-www-form-urlencoded";
            HttpWReq.ContentLength = data.Length;
            first = !first;
        }

        Stream newStream = HttpWReq.GetRequestStream();
        newStream.Write(data, 0, data.Length);
        newStream.Close();

        WebResponse resp = HttpWReq.GetResponse();
        StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
        return sr.ReadToEnd().Trim();
    }
}

I'm getting an error that the connection was closed (newstream). Why can't I use the same connection to send more than one request?

The only idea that I can think about it's to send a stream var to letstry, instead of creating newstream.

I'm no expert, so I'm sorry for any unnecessary mistakes.

tyvm for your help:)

Answer 1

WebRequest is designed to do what it says: make one request. If you want to make multiple requests, just create new WebRequest each time.

If the KeepAlive property is true, the requests try to use the same connection, if possible. See Understanding System.Net Connection Management and ServicepointManager for more information.