CountSmileys in my way and as RegularExpression

CountSmileys.cs

        private static int CountSmiley(string[] smileys)
        {
            // :) :D ;-D :~) - Valid.
            // ;( :> :} :] - Invalid.
            int counter = 0;

            foreach (string item in smileys)
            {
                switch (item)
                {
                    case ":D":
                        counter++;
                        break;

                    case ":~)":
                        counter++;
                        break;

                    case ";~D":
                        counter++;
                        break;

                    case ":-)":
                        break;

                    case ":)":
                        counter++;
                        break;

                    case ";-D":
                        counter++;
                        break;

                    case ";D":
                        counter++;
                        break;

                    case ";-)":
                        counter++;
                        break;

                    case ":-D":
                        counter++;
                        break;

                    case ";)":
                        counter++;
                        break;

                    case ";~)":
                        counter++;
                        break;

                    case ":~D":
                        counter++;
                        break;
                }
            }
            return counter;
        }

CountSmileys2.cs

        public static int CountSmileys2(string[] smileys)
        {
            return smileys.Count(s => Regex.IsMatch(s, @"^[:;]{1}[~-]{0,1}[\)D]{1}$"));
        }