i have problem with remove in the following program: public class Program11 { static void Main(string[] args) { StringBuilder sb = new StringBuilder("Hello World!", 50); //"Hallo Welt! start String //50 maximale Länge des Strings sb.Append(" How are u?"); // string hinten anfügen sb.AppendLine(); sb.AppendLine("I am fine!"); //string hinten anfügen zeilenumbruch sb.Insert(0, ":) "); Console.WriteLine(sb.ToString()); sb.Remove(9, 14); Console.WriteLine(sb.ToString()); } } } I wanna remove World witch should go from 9-14: output before remove; Hello World! How are u? I am fine!