第十节 8ASP.Net揭秘之Input版自增补充说明-优快云博客

<%@ WebHandler Language="C#" Class="IntValue2" %>

using System;
using System.Web;

public class IntValue2 : 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["number"];
        string issubmit = context.Request["issubmit"];
        if (ispostback == "true") 
        {
            int i = Convert.ToInt32(number);
            if (issubmit == "1")
            {
                i++;
            }
            else {
                if (i > 1) {
                    i--;
                }
            }            
            number = i.ToString();
        }else{
            number = "0";
        }
        string filepath = context.Server.MapPath("IntValue2.htm");
        string content = System.IO.File.ReadAllText(filepath);
        content = content.Replace("@number",number);
        content = content.Replace("@issubmit",issubmit);
        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>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script language="javascript">
    function SetIsSubmit(val) {
        //alert("val=="+val);
        $("#issubmit").val(val);
        //alert($("#issubmit").val());
     }
</script>
<form method="post" action="IntValue2.ashx">
<input type="hidden" name="ispostback" value="true" />
<input type="hidden" name="issubmit" id="issubmit" value="@issubmit" />
<input type="text" name="number" value="@number"/>

<input type="submit" name="submit" value="自增" οnclick="SetIsSubmit(1)"/>

<input type="submit" name="submit2" value="自减" οnclick="SetIsSubmit(2)"/>
</form>
</body>
</html>