asp.net绑定label的示例代码

前台页面:
<asp:Label ID="Label1" runat="server" Text=’<%#GetName((sender as Label).ID.Substring(5)) %>’></asp:Label>  
      <br />  
      <asp:Label ID="Label2" runat="server" Text=’<%#GetName((sender as Label).ID.Substring(5)) %>’></asp:Label>  
       <br />  
      <asp:Label ID="Label3" runat="server" Text=’<%#GetName((sender as Label).ID.Substring(5)) %>’></asp:Label>  
      <br />  
      <asp:Label ID="Label4" runat="server" Text=’<%#GetName((sender as Label).ID.Substring(5)) %>’></asp:Label>  

后台代码:
IDictionary<int, string> Dic = new Dictionary<int, string>();   
   protected void Page_Load(object sender, EventArgs e)   
   {   
       if (!Page.IsPostBack)   
       {   
           BindData();   
       }   
   }   
   public string GetName(object index)   
   {   
       //如果运算符的左边是非空的就返回左边，否则是右边！   
       index = index ?? " ";   
       int key;   
       int.TryParse(index.ToString(), out key);   
  
       return Dic[key];   
   }   
   public void BindData()   
   {   
       Dic.Add(1, "胡果");   
       Dic.Add(2, "胡磊");   
       Dic.Add(3, "俊文");   
       Dic.Add(4, "刘皮");   
       DataBind();   
   }