This code snippet allows you to generate a clean Url slug.

It uses Cyrillic encoding so this solution will not work for non Latin alphabet.

Any comments are welcome!

public static string ToUrlSlug(string value){

    //First to lower case
    value = value.ToLowerInvariant();

    //Remove all accents
    var bytes = Encoding.GetEncoding("Cyrillic").GetBytes(value);
    value = Encoding.ASCII.GetString(bytes);

    //Replace spaces
    value = Regex.Replace(value, @"\s", "-", RegexOptions.Compiled);

    //Remove invalid chars
    value = Regex.Replace(value, @"[^a-z0-9\s-_]", "",RegexOptions.Compiled);

    //Trim dashes from end
    value = value.Trim('-', '_');

    //Replace double occurences of - or _
    value = Regex.Replace(value, @"([-_]){2,}", "$1", RegexOptions.Compiled);

    return value ;
}