小案例

1. 前台

 1 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Interface.aspx.cs" Inherits="Interface" %>
 2 
 3 <!DOCTYPE html>
 4 
 5 <html xmlns="http://www.w3.org/1999/xhtml">
 6 <head runat="server">
 7 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
 8     <title></title>
 9     <script type="text/javascript">
10         window.onload = function () {
11             document.getElementById("btnJiSuan").onclick = function () {
12                 document.getElementById("form1").submit();
13             }
14         }
15     </script>
16 </head>
17 <body>
18     <form id="form1" method="post" action="Interface.aspx">
19         <table>
20             <tr>
21                 <td><input type="text" name="txtN1" value="<%=num1 %>" /></td>
22             </tr>
23             <tr>
24                 <td>+</td>
25             </tr>
26             <tr>
27                 <td><input type="text" name="txtN2" value="<%=num2 %>" /></td>
28             </tr>
29             <tr>
30                 <td>=</td>
31             </tr>
32             <tr>
33                 <td><input type="text" name="txtRes" value="<%=res %>" /></td>
34             </tr>
35             <tr>
36                 <td><input type="button" value="计算" id="btnJiSuan" /></td>
37             </tr>
38         </table>
39     </form>
40 </body>
41 </html>

View Code

2. 后台

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.UI;
 6 using System.Web.UI.WebControls;
 7 
 8 public partial class Interface : System.Web.UI.Page
 9 {
10     protected int num1;
11     protected int num2;
12     protected int res;
13     protected void Page_Load(object sender, EventArgs e)
14     {
15         if (Request.HttpMethod.ToLower() == "post")
16         {
17             num1 = Convert.ToInt32(Request.Form["txtN1"]);
18             num2 = Convert.ToInt32(Request.Form["txtN2"]);
19             res = num1 + num2;
20         }
21     }
22 }

View Code