using System;

using System.Web;

using System.Collections.Generic;

public class Program

{

    public void Main()

    {

        var tests = new Dictionary<string, string>()

        {

            { "http://foo.com", "http://foo.com?a=b" }, // UriBuilder slenger på trailing slash alltid, er det problematisk?

            { "http://foo.com/", "http://foo.com/?a=b" },

            { "http://foo.com/#", "http://foo.com/#?a=b" },

            { "http://foo.com/#/", "http://foo.com/#/?a=b" },

            { "http://foo.com/#!/", "http://foo.com/#!/?a=b" },

            // Denne ...

            //{ "http://foo.com/#frag", "http://foo.com/#frag?a=b" },

            //{ "http://foo.com/#frag/", "http://foo.com/#frag/?a=b" },

            // ... eller denne 

            { "http://foo.com/#frag", "http://foo.com/?a=b#frag" },

            { "http://foo.com/#frag/", "http://foo.com/?a=b#frag/" },

            { "http://foo.com/?query", "http://foo.com/?query&a=b" },

            { "http://foo.com/?query#frag", "http://foo.com/?query&a=b#frag" },

            { "http://foo.com/?a=x", "http://foo.com/?a=x&a=b" } // UriBuilder overskriver keys

        };

        var methods = new Func<string, string, string, string>[] {

            AddParameterWithUriBuilder

        };

        foreach (var m in methods) {

            Console.WriteLine("----- " + m.Method.Name + " -----");

            foreach (var s in tests) {

​

                var r = AddParameterWithUriBuilder(s.Key, "a", "b");

​

                if (r.ToString() == s.Value) {

                    Console.WriteLine("OK   '" + s.Key + "' > '" + s.Value + "'");

                }

                else {

                    Console.WriteLine("FAIL '" + s.Key + "' > '" + r.ToString() + "', expected: '" + s.Value + "'");

                }

            }

            Console.WriteLine("");

        }

    }

    public string AddParameterWithUriBuilder(string url, string paramName, string paramValue)

    {

        var uriBuilder = new UriBuilder(url);

        //Console.WriteLine(uriBuilder.Fragment);

        var query = HttpUtility.ParseQueryString(uriBuilder.Query);

        query[paramName] = paramValue;

        uriBuilder.Query = query.ToString();

        return uriBuilder.Uri.ToString();

    }

    public static string AddParameterWithUriBuild(string url, string paramName, string paramValue)

    {

        var uriBuilder = new UriBuilder(url);

        var query = HttpUtility.ParseQueryString(uriBuilder.Query);

        query[paramName] = paramValue;

        uriBuilder.Query = query.ToString();

        return uriBuilder.Uri.ToString();

    }

}