C#中this的作用

public class ThisName 

  {

      public string name = "张三";

      public int num = 55;

      public ThisName() { }

      public void GetThisName(string name, int num)

      {

          name = this.name;//调取全局变量name

          num = this.num;//调取全局变量num

          HttpContext.Current.Response.Write("参数name的值为:"+name+";参数num的值为:"+num);//输出结果为"参数name的值为张三;参数num值为:55"

      }

  }

public  class ThisFF

   {

      public ThisFF()

      { 

      }

      public string shuju()

      {

          return "This指针当做方法传递";

      }

 

      public void f1(ThisFF ff)

      {

          HttpContext.Current.Response.Write(ff.shuju());

      }

 

      public void f()

      {

          f1(this);//this在这里可以理解为 ThisFF ff=news ThisFF();当前类的实例

      }

   }

 

  ThisFF ff=news ThisFF();//方法实例

  ff.f();//调用方法 输出结果为： This指针当做方法传递

private int _Sy;

       public int this[int sy]

       {

           get { return  _Sy;}

           set { sy=_Sy;}

       }