ASP.NET在服务器端传递一个javascript值 [英] ASP.NET pass a javascript value in server side
本文介绍了ASP.NET在服务器端传递一个javascript值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何在服务器端(C#)中传递客户端(JS)值?
Hi how can I pass a client side (JS) value in server side (C#)?
例如
我有一个生成的表(上传图像后)，它包含图像，我想选择图像并将ID扔回服务器端.
I have a generated table (after uploading images) and it contains images and I want to select the image and throw the ID back in server side.
我使用的uploade是JQuery Uploadify，并且具有"onComplete"功能
The uploade I used was JQuery Uploadify and I have a "onComplete" function
(simple code)
'onComplete': function (event, queueID, fileObj, response, data) {
$('#imgs').append('<img id="' + queueID + '" src="' + response + '" alt="' + response + '" />');
我该怎么做?
推荐答案
要将javascript中的值发送到服务器，您有两个选择:
To send a value from javascript to the server you have a couple of options:
- 如果要保留在当前页面上，请使用AJAX
- 重定向到服务器端脚本并在查询字符串中传递值
让我们考虑第一种情况:
Let's consider the first case:
假设您有一个Web方法能够接收服务器上的值:
Assuming you have a web method capable of receiving the value on the server:
<%@ Page Title="Home Page" Language="C#" AutoEventWireup="true" %>
<script type="text/C#" runat="server">
// Server side script in the code behind that will receive
// the value: The method needs to be static
// and decorated with the WebMethod attribute
[System.Web.Services.WebMethod]
public static string Foo(string id)
{
return "ok";
}
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head id="Head1" runat="server">
<title></title>
<link href="~/Styles/Site.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
// Send an AJAX request to the server
$.ajax({
url: '/default.aspx/foo',
type: 'POST',
contentType: 'application/json; charset=utf-8',
// Pass the value as JSON string
// You might need to include json2.js for the JSON.stringify
// method: http://www.json.org/json2.js
data: JSON.stringify({ id: 'someId123' }),
success: function (result) {
// The result is also JSON
alert(result.d);
}
});
});
</script>
</head>
<body>
<form id="Form1" runat="server">
</form>
</body>
</html>
这篇关于ASP.NET在服务器端传递一个javascript值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
