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Asp.Net Ajax最簡單的例子

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執行個體1：DropDownList的簡單無重新整理連動

<%@ 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>無標題頁</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("羅不","1");
                dplList.Items.Add(item);
            }
            if (dplFood.SelectedValue == "1")
            {
                dplList.Items.Clear();
                ListItem item = new ListItem("蘋果","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 id="form1" runat="server">
    <div>
    <asp:ScriptManager ID="Script" runat="server"></asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel" runat="server">
        <ContentTemplate>
            <asp:DropDownList ID="dplFood" runat="server" AutoPostBack="true" OnSelectedIndexChanged="dplFood_SelectedIndexChanged">
                <asp:ListItem Text="蔬菜" Value="0"></asp:ListItem>
                <asp:ListItem Text="水果" Value="1"></asp:ListItem>
            </asp:DropDownList>
            <asp:DropDownList ID="dplList" runat="server">
            </asp:DropDownList>
        </ContentTemplate>
    </asp:UpdatePanel>
    </div>
    </form>
</body>
</html>

執行個體 二：改變日曆的背景色
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<script runat="server">

    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 id="Head1" runat="server">

    <title>ScriptManager Example</title>

</head>

<body>

    <form id="form1" runat="server">

        <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>

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