Represents a mutable string of characters.
using System; using System.Text; public class App { static void Main() { StringBuilder sb = new StringBuilder("ABC", 50); sb.Append(new char[] { 'D', 'E', 'F' }); sb.AppendFormat("GHI{0}{1}", 'J', 'k'); Console.WriteLine("{0} chars: {1}", sb.Length, sb.ToString()); sb.Insert(0, "asdf: "); sb.Replace('k', 'K'); Console.WriteLine("{0} chars: {1}", sb.Length, sb.ToString()); } }