委托的三种写法

.net Frame work 1.1
  public delegate int CalculateAdd(int a, int b);
  CalculateAdd add=new CalculateAdd(Add);
            int d = add(1, 2);
            MessageBox.Show(d.ToString());
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.net frame work 2.0
 CalculateAdd add = delegate(int a, int b) { return a + b; };
            int d = add(1, 2);
            MessageBox.Show(d.ToString());
//注：匿名方法
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.net frame work 3.0
  CalculateAdd add = (a, b) => a + b;
            int d = add(1, 2);
            MessageBox.Show(d.ToString());
Lambda 表达式