一,新建接口

using System;using System.Collections.Generic;using System.Linq;using System.Web;/// 
/// InterF 的摘要说明/// 
    public interface Itest    {        string show();        string display();    }

 二,新建接口实现类

using System;using System.Collections.Generic;using System.Linq;using System.Web;/// 
/// test 的摘要说明/// 
public class test :Itest{    public string show()    {        return "隐式实现接口";    }    string Itest.display()    {        return "显式实现接口";    }}

 三,调用实现

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;public partial class Mytest : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {        Itest a = new test();        Label1.Text = a.show();        Label2.Text = a.display();    }}