A.aspx页面放一个dropdownlist，在A.aspx.cs添加： this.drpSchool.Attributes.Add("onchange", "load(this.options[this.selectedIndex].value)");
在A.aspx页面添加如下脚本：
function load(state){
var oHttpReq = new ActiveXObject("MSXML2.XMLHTTP");
var oDoc = new ActiveXObject("MSXML2.DOMDocument");
oHttpReq.open("POST", "../B.aspx?state="+state, false);
oHttpReq.send("");
result = oHttpReq.responseText;
oDoc.loadXML(result);
items1 = oDoc.selectNodes("//NewDataSet/Table/dtid");
items2 = oDoc.selectNodes("//NewDataSet/Table/dtname");
var itemsLength=items1.length;
for(i=0;i<itemsLength;i++)
//将小类的类名和编号赋予DropDownList2
{
var newOption = document.createElement("OPTION");
newOption.text=items2[i].text;
newOption.value=items1[i].text;
drp2.options.add(newOption);
// newOption.value=6;
}
}
B.aspx.cs页面：
if (Request.QueryString["state"] != null && Request.QueryString["state"].ToString() != "")
{
try
{
int shengNo = int.Parse(Request["state"].ToString());
// int shengNo = 1;
DataSet ds = new DataSet();
db dbb = new db();
ds = dbb.GetDataSet(SQL语句);
if (ds.Tables[0].Rows.Count > 0)
&nb
页面代码：
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManage ......
