Piglatin encryption C#

System.Collections.Generic.List`1[System.String]

Quote:

C#

 private void pigLatin(string sentence) {
            const string vowels = "AEIOUaeio";
            List<string> pigLatin = new List<string>();
            string input = txInput.Text;
            foreach (string word in input.Split(' ')) {
                string firstLetter = word.Substring(0, 1);
                string restOfWord = word.Substring(1, word.Length - 1);
                int currentLetter = vowels.IndexOf(firstLetter);

                if (currentLetter == -1) {
                    pigLatin.Add(restOfWord += firstLetter + "ay");
                }
                else {
                    pigLatin.Add(word + "way");
                }
                txtOutput.Text = " " + pigLatin;
                //return string.Join(" ", pigLatin);
            }
        }

        private void btnConvert_Click(object sender, EventArgs e) {
            string input = (txInput.Text);
            pigLatin(input);
        }
    }
}