Parsing Url in C#

Parsing.cs

class Program
    {
        static void Main(string[] args)
        {
            string url = "nama=purwanto&pacar=cantik & sexy&mobil=subaru & ferari&rumah=besar & mewah&rejeki=lancar & barokah & manfaat&ortu=senang bahagia";
            Console.WriteLine("Text Asli\n{0}\n\nCount: {1} item\n",url,ParsingUrl(url).Count);
            foreach (var item in ParsingUrl(url))
            {
                Console.WriteLine("{["+item.Key+"]:["+item.Value+"]}");
            }
            Console.ReadKey();
        }


        static Dictionary<string,string> ParsingUrl(string input_stream) {
            Dictionary<string, string> result = new Dictionary<string, string>();
            List<string> listParse = new List<string>();

            string[] result_list = input_stream.Split('&');
            List<string> args_params = new List<string>();

            for (int i = 0; i < result_list.Length; i++)
            {
                if (result_list[i].Contains('='))
                {
                    string[] params_split = result_list[i].Split('=');
                    if (params_split[0] != null)
                    {
                        args_params.Add(params_split[0]);
                    }
                }
            }

            for (int i = 0; i < args_params.Count; i++)
            {
                string arg = (i == 0 ? "" : "&") + args_params[i] + "=";
                int startIndex = input_stream.IndexOf(arg);
                if (startIndex >= 0)
                {
                    startIndex += arg.Length;
                    int endIndex = (i + 1) == args_params.Count ? input_stream.Length : (input_stream.IndexOf("&" + args_params[i + 1]) == -1 ? input_stream.Length : input_stream.IndexOf("&" + args_params[i + 1]));
                    result.Add(args_params[i], input_stream.Substring(startIndex, endIndex - startIndex));
                }
            }
            return result;
        }
    }