大家好~！我想问，在.NET中，哪位仁兄有省份，城市的下拉框选择代码给看看呢，非常感谢~！

我现在需要省份，城市，二级下拉框列表的代码
最好是JS脚本的，数据库的也可以能把详细代码和调用方法写给我吗？
我不知道在ASP.NET中怎么写谢谢大家
十分感激

解决方案 »

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google,baidu一下。这方面代码满多的撒
page_load()
{
if(!ispostback)
{
this.ddlProvince.DataSource = ds
            this.ddlProvince.DataTextField = "Province";
this.ddlCity.DataValueField = "ID";
            this.ddlProvince.DataBind();            this.ddlCity.DataSource = ds;
            this.ddlCity.DataTextField = "City";
            this.ddlCity.DataValueField = "ID";
            this.ddlCity.DataBind();
}
protected void ddlProvince_SelectedIndexChanged(object sender, EventArgs e)
    {
        this.ddlCity.DataSource = ds;
            this.ddlCity.DataTextField = "City";
            this.ddlCity.DataValueField = "ID";
            this.ddlCity.DataBind();    }
搜一下,网上很多的啊
有服务器版,有客户端的
有xml的,有数据库的
google下省市二级联动有很多的...
要点：
runat="server" AutoPostBack="True" OnSelectedIndexChanged="ddlProvince_SelectedIndexChanged"
<html>
<head>
<title>省份城市联动下拉列表</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body bgcolor=#FFFFFF alink=#333333 vlink=#333333 link=#333333 topmargin=0 leftmargin=0><form action="http://www.chinaleader.com/cgi-bin/register.cgi" method=post name="creator" enctype="multipart/form-data"><script language="javascript">

</script>
<body onload="init()">
<font color=#000000><b>来自：</b><br>请输入您所在国家的具体地方。此项可选<br><br>
省份 <select name="province" onChange = "select()"></select>　城市 <select name="city" onChange = "select()"></select><br>
我在 <input type=text name="newlocation" maxlength=12 size=12 style="font-weight: bold">　不能超过12个字符（6个汉字）
</form>我用这个！！！
<script type="text/javascript">
    var xmlHttp;
function createHttp()
{
    if(window.ActiveXObject)
    {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if(window.XMLHttpRequest)
    {
        xmlHttp=new XMLHttpRequest();
    }
}
function getData()
{
    createHttp();

    var myCity=document.getElementById("txtCity").value;
    xmlHttp.onreadystatechange=StateDO;
    xmlHttp.Open("POST","dataPage.aspx?city=" + escape(myCity),true);
    xmlHttp.Send();
}
function StateDO()
{
    if(xmlHttp.readystate==4)
    {
        if(xmlHttp.status==200)
        {
            FillData(xmlHttp.responseText);

        }
    }
}
function FillData(strcity)
{

    document.getElementById("ddlArea").options.length=0;
    var indexofcity;
    var city;
    while(strcity.length>0)
    {
        indexofcity=strcity.indexOf(",");
        if(indexofcity>0)
        {
            city=strcity.substring(0,indexofcity);
            strcity=strcity.substring(indexofcity+1);
            document.getElementById("ddlArea").add(new Option(city,city));
        }
        else
        {
            lastcity=strcity.substring(0,2);
            document.getElementById("ddlArea").add(new Option(lastcity,lastcity));
            break;
        }
    }
}

</script>
这个是前台js代码
protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string myCity = Request.QueryString["city"];
            Response.Clear();
            switch (myCity.Trim())
            {
                case "北京":
                    Response.Write("朝阳,海淀,东城,西城,丰台");
                    break;
                case "上海":
                    Response.Write("浦东,静安,虹口,徐汇");
                    break;
                case "济南":
                    Response.Write("立下,历程");
                    break;
            }
        }
    }
后台dataPage.aspx的代码
具体的根据你的需求再改下吧
http://www.blogjava.net/liuwentao253/archive/2006/06/07/51138.html