internal delegate int MyDel(int x); public class Lambda { private MyDel del = delegate(int x) { return x + 1; };//匿名方法 private MyDel del2 = (int x) => { return x + 1; };//Lambda表达式 private MyDel del3 = (x) => { return x + 1; };//Lambda表达式 private MyDel del4 = x => x + 1; //Lambda表达式 }