ASP.NET中 ListBox列表框控件的使用方法_基础应用_

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ListBox.aspx.cs" Inherits="WebControls_ListBox" %>
 
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
http://www.w3.org/1999/xhtml">

   
   


   

   

       

1,单选列表框

        省份：
            山东
            河北
            内蒙
            安徽
       
       

       
       

---

        你选择的为：
 
       

---

       

            2,多选列表框

        省份：
            山东
            河北
            内蒙
            安徽
       
          提示：Ctrl+单击

                    onclick="btnSubmit2_Click"  />
       

---

        你选择的为：
   

   

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
public partial class WebControls_ListBox : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
 
    }
    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        lblState.Text = lstProv.SelectedValue;
    }
    protected void btnSubmit2_Click(object sender, EventArgs e)
    {
        string str = string.Empty;
        for (int i = 0; i < lstProv2.Items.Count; i++)
        {
            if (lstProv2.Items[i].Selected == true)
            {
                str = string.Format("{0}{1},",str,lstProv2.Items[i].Value);
            }
        }
        str = str.Substring(0, str.Length - 1); //去掉最后一个“,”
        lblState2.Text = str;
    }
}