using System;

using System.Net;

using System.Web;

​

public class Program

{

    public static void Main()

    {       

        Uri uri = new Uri("http://bookReport/request.aspx?user=abc&password=password&request=1&option=yes");

        var qs = HttpUtility.ParseQueryString(uri.Query);

        var username = qs["user"];

        var password = qs["password"];

        var rq = qs["request"];

        var option = qs["option"];

        Console.WriteLine(username);

        Console.WriteLine(password);

        Console.WriteLine(rq);

        Console.WriteLine(option);                                            

    }

}