c#介面

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介面內可以定義：索引器，屬性，函數，事件。均不能用存取修飾詞訪問

 1 public  interface IEventInterFace 2     { 3         string this[int index] { get; set; }//索引器 4         List<string> MyList { get; set; } //屬性 5         string Name { get; set; }//屬性 6         event EventHandler MyEventHandler;//事件 7         void Meth();//方法 8     } 9 10     public class InterFaceTestClass:IEventInterFace11     {12         public string this[int index]//索引器實現13         {14             15              get16              {17                 if(index>0&&index<=MyList.Count-1)18                   return MyList.ToArray()[index];19                 return "超出邊界";20              }21              set22              {23                  MyList[index] = value;24              }25         }26         public List<string> MyList { get; set; } //屬性實現27         public  string Name { get; set; }//屬性實現28         public void Meth()//方法實現29         {30             Console.WriteLine("Meth");31         }32         public event EventHandler MyEventHandler;//事件實現33 34         public void InvokeMyEventHandler()//呼叫事件的方法35         {36             MyEventHandler(null, null);37         }38     }39 class Program40     {41         public static void MyMethed(object sender,EventArgs e)42         {43             Console.WriteLine("MyMethed");44         }45 46         static void Main(string[] args)47         {48 49             var myClass=new InterFaceTestClass();50             myClass.MyList=new List<string>(){"a","b","c"};51             var str= myClass[1];//索引器用法52             Console.WriteLine(str);53             54             myClass[1] = "bb";55             myClass.Meth();56             myClass.MyEventHandler+=new EventHandler(MyMethed);//事件添加函數57 58             myClass.InvokeMyEventHandler();59             60            61         }62     }

 

c#介面