C#中使用委托的3种方式代码示例

using system;

namespace delegatedemo
{
  class program
  {
    private delegate int cacu(string str);

    static void main(string[] args)
    {
      //1
      cacu cacu = new cacu(cacuinstance);

      console.writeline(cacu("hello,wrold"));

      //2
      cacu cacu1 = new cacu(delegate(string str) { return str.length; });

      console.writeline(cacu1("hello,wrold"));

      //3
      cacu cacu2 = new cacu((str) => { return str.length; });

      console.writeline(cacu2("hello,wrold"));
    }

    static int cacuinstance(string str)
    {
      return str.length;
    }
  }
}