How to specific special character replace in C#?

char[] delimiterChars = {'*',',', '.', ':', '&','!','@','#','$','%','^','&'};

            string text = Console.ReadLine();
            System.Console.WriteLine("Original text: '{0}'", text);
            string s1=string.Empty;
            string[] words = text.Split(delimiterChars);
            foreach (string s in words)
            {
                if (s1 == "")
                {
                    s1 = s;
                }
                else
                {
                    s1 = s1 + "-" + s;
                }
            }
            s1=s1.TrimEnd('-');