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webform1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="test5_2.WebForm1" %>
           
   
    
    
        
             
                 
      
       请任选一项
                  
      
       我的出生地
                  
      
       我母亲的名字
                  
      
       我父亲的名字
              
             
     
        
             
         
    
    
   

webform1.aspx.cs

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace test5_2{    public partial class WebForm1 : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            Label2.Text = "答案：";        }        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)        {            switch (DropDownList1.SelectedValue)            {                 case "1":                    Label2.Text = DropDownList1.Items[DropDownList1.SelectedIndex].Text+":";                    break;                case "2":                    Label2.Text = DropDownList1.Items[DropDownList1.SelectedIndex].Text + ":";                    break;                case "3":                    Label2.Text = DropDownList1.Items[DropDownList1.SelectedIndex].Text + ":";                    break;            }        }    }}

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