Like Wim, I'm struggling to understand what you mean, but the following works fine: using System; class Program { static void Main() { string s = new string('a', 5); Console.WriteLine(s); char[] chars = {'a', 'b', 'c', 'd', 'e'}; s = new string(chars); // using a different string constructor Console.WriteLine(s); Console.ReadKey(); } } The output is: aaaaa abcde