vs2015 dynamicweb4-4

webform1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="dynamicweb4_4.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h3>个人信息</h3>
        <table border="1">
            <tr>
                <td>入学年份：</td>
                <td>
                    <asp:DropDownList ID="ddlYear" runat="server"></asp:DropDownList>
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:Button ID="btnSubmit" runat="server" Text="确定" OnClick="btnSubmit_Click" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:Label ID="lblTips" runat="server" Text=""></asp:Label>
                </td>
            </tr>
        </table>
    </div>
    </form>
</body>
</html>

webform1.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace dynamicweb4_4
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                for (int i = 1980; i <= DateTime.Now.Year; i++)
                {
                    ddlYear.Items.Add(i.ToString());
                }
            }
        }

        protected void btnSubmit_Click(object sender, EventArgs e)
        {
            lblTips.Text = "";

            if (ddlYear.SelectedIndex >= 0)
            {
                lblTips.Text += "入学年份：" + ddlYear.SelectedItem.Text + "<br>";
            }

        }
    }
}

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