StringBuilder.sb.AppendLine();

StringBuilder sb=new StringBuilder();
sb.AppendLine("The world is fair and wonderful.Everything depend on myself");
sb.AppendLine("Stay focused and keep shipping");
sb.AppendLine("Devote myself into the present job");
sb.AppendLine("Cherish the present moment and make every second count!");
Console.WriteLine(sb.ToString());

Console.WriteLine(sb.Length);

Console.ReadLine();

原文：http://www.cnblogs.com/Fred1987/p/5557817.html