using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var url = GetFormattedUrl("A Test Url");

        Console.WriteLine(url);

    }

    public static string GetFormattedUrl(string input)

        {

            if (String.IsNullOrEmpty(input))

            {

                return String.Empty;

            }

​

            // Replace spaces with dashes or other delimmeter

            input.ToLower().Replace(" ", "-");

​

            // Only allow alpha numeric and dashes

            Regex rgx = new Regex("[^a-zA-Z0-9-]");

            input = rgx.Replace(input, "");

​

            return input;

        }

}