实例1：DropDownList的简单无刷新连动
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!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>无标题页</title>
<script runat="server">
protected void dplFood_SelectedIndexChanged(object sender, EventArgs e)
{
if (dplFood.SelectedValue == "0")
{
dplList.Items.Clear();
ListItem item = new ListItem("白菜", "0");
dplList.Items.Add(item);
item = new ListItem("罗不","1");
dplList.Items.Add(item);
}
if (dplFood.SelectedValue == "1")
{
dplList.Items.Clear();
ListItem item = new ListItem("苹果","0");
dplList.Items.Add(item);
item = new ListItem("李子","1");
dplList.Items.Add(item);
item = new ListItem("桃","2");
dplList.Items.Add(item);
}
}
</script>
</head>
<body>
<form >
void DropDownSelection_Change(Object sender, EventArgs e)
{
Calendar1.DayStyle.BackColor =
System.Drawing.Color.FromName(ColorList.SelectedItem.Value);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head >
<title>ScriptManager Example</title>
</head>
<body>
<form >
<div>
<asp:ScriptManager ID="ScriptManager1"
runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1"
runat="server">
<ContentTemplate>
<asp:Calendar ID="Calendar1"
ShowTitle="True"
runat="server" />
<div>
Background:
<br />
<asp:DropDownList ID="ColorList"
AutoPostBack="True"
OnSelectedIndexChanged="DropDownSelection_Change"
runat="server">
<asp:ListItem Selected="True" Value="White">
White </asp:ListItem>
<asp:ListItem Value="Silver">
Silver </asp:ListItem>
<asp:ListItem Value="DarkGray">
Dark Gray </asp:ListItem>
<asp:ListItem Value="Khaki">
Khaki </asp:ListItem>
<asp:ListItem Value="DarkKhaki"> D
ark Khaki </asp:ListItem>
</asp:DropDownList>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<br />
</div>
</form>
</body>
</html>