<%@ 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>