第十节 7ASP.Net揭秘之Input版自增简单

<%@ WebHandler Language="C#" Class="IntValue" %>

using System;
using System.Web;
/* 数值自增
 * 实现input的自增，点击按钮input中的值自动增加，代码见备注
 * 使用aspx重写input的自增
 *
 *
 */
public class IntValue : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/html";
        //context.Response.Write("Hello World");
        string ispostback = context.Request["IsPostBack"];
        string number = context.Request["value"];
        if (ispostback == "true")  //通判断是否是第一次点击进入
        {
            int i = Convert.ToInt32(number);
            i++;
            number = i.ToString();
        }
        else {
            number = "0";
        }
        string filepath = context.Server.MapPath("IntValue.htm");
        string content = System.IO.File.ReadAllText(filepath);
        content = content.Replace("@value",number);
        context.Response.Write(content);
        
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}

<!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>
    <title></title>
</head>
<body>
<form method="post" action="IntValue.ashx">
    <input type="hidden" name="IsPostBack" value="true" />
    <input type="text" name="value" value="@value" /> 
    <input type="submit" value="自增"/>
</form>
</body>
</html>

第十节 7ASP.Net揭秘之Input版自增 简单

第十节 7ASP.Net揭秘之Input版自增简单