.CS文件
using System;
using System.Data;
using System.Data.OleDb;
using System.Collections;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
namespace joke
{
public partial class _Default : System.Web.UI.Page
{
DataSet myDS;
protected void Page_Load(object sender, EventArgs e)
{
string strCon = @"Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = 'D:/Projects/joke/joke/mydb.mdb';";
OleDbConnection myConn = new OleDbConnection(strCon);
string strCom = " SELECT * FROM mytab";
//創建一個 DataSet對象
myConn.Open();
myDS = new DataSet();
OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);
myCommand.Fill(myDS, "mytab");
myConn.Close();
if (!IsPostBack)
{
this.DropDownList1.SelectedIndex = 0;
this.DropDownList2.SelectedValue = myDS.Tables["mytab"].Rows[0].ItemArray[1].ToString();
}
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
switch (this.DropDownList1.SelectedValue)
{
case "xiaoa":
this.DropDownList2.SelectedValue = myDS.Tables["mytab"].Rows[0].ItemArray[1].ToString();
break;
case "xiaob":
this.DropDownList2.SelectedValue = myDS.Tables["mytab"].Rows[1].ItemArray[1].ToString();
break;
case "xiaoc":
this.DropDownList2.SelectedValue = myDS.Tables["mytab"].Rows[2].ItemArray[1].ToString();
break;
}
}
}
}
.aspx 文件
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="joke._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server"
DataSourceID="AccessDataSource1" DataTextField="name" DataValueField="name"
onselectedindexchanged="DropDownList1_SelectedIndexChanged" Width="145px"
AutoPostBack="True">
</asp:DropDownList>
<asp:AccessDataSource ID="AccessDataSource1" runat="server"
DataFile="~/mydb.mdb" SelectCommand="SELECT * FROM [mytab]">
</asp:AccessDataSource>
<br />
<br />
<asp:DropDownList ID="DropDownList2" runat="server"
Height="19px" Width="145px" DataSourceID="AccessDataSource1" DataTextField="sex"
DataValueField="sex" EnableTheming="True">
</asp:DropDownList>
</div>
</form>
</body>
</html>