Ajax的方法调用 [英] Ajax method call
问题描述
我试图调用一个简单的方法，在我的code使用jQuery使用Ajax背后。但我得到一个404未发现异常每次。不幸的是，这是一个Web表单解决方案。所以，我没有MVC的所有津贴：（
I am trying to call a simple method in my code behind using Jquery with Ajax. But I get a 404 not found exception everytime. Unfortunately this is a web forms solution. So I dont have all the perks of MVC :(
它进入JavaScript方法，并给出了警告，但不会进入我的C＃方法。我的previous使用这个jQuery方法的经验，是一个MVC的网站。它是用的WebForms网站兼容？
It does get into the javascript method and gives the alert but won't go into my c# method. My previous experience of using this Jquery method is in an MVC website. Is it compatible with webforms sites?
我的Javascript是：
My Javascript is:
$(document).ready(function() {
$('#btn_<%=UserStuff.tag %>').click(function() {
var value = $('#<%#Eval("tag") %>twink').val();
something(value);
});
});
function something(theval) {
alert(theval);
$.ajax({
type: "POST",
url: "/Default.aspx/MyMethod?something=" + theval,
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
alert(msg);
}
});
}
}
和我的C＃code是：
And my C# code is:
public JsonResult MyMethod(string something)
{
JsonResult ret = new JsonResult();
return ret;
}
在此先感谢。
Thanks in advance.
推荐答案
您方法的返回值 JsonResult 。这是MVC具体的，你不能在一个web表单应用程序中使用它。
Your method returns JsonResult. This is MVC specific and you cannot use it in a webforms application.
如果你想调用在code方法落后于经典的WebForms应用程序，你可以使用<一个href="http://encosia.com/2008/05/29/using-jquery-to-directly-call-aspnet-ajax-page-methods/">PageMethods:
If you want to call methods in the code behind in a classic WebForms application you could use PageMethods:
[WebMethod]
public static string GetDate()
{
return DateTime.Now.ToString();
}
然后调用方法：
And then to call the method:
$.ajax({
type: 'POST',
url: 'PageName.aspx/GetDate',
data: '{ }',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function(msg) {
// Do something interesting here.
}
});
这是一个完整的工作的例子，我为你写的：
And here's a full working example I wrote for you:
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Services" %>
<script type="text/C#" runat="server">
[WebMethod]
public static string SayHello(string name)
{
return "Hello " + name;
}
</script>
<!DOCTYPE html>
<html>
<head>
<title></title>
<script type="text/javascript" src="/scripts/jquery-1.4.1.js"></script>
<script type="text/javascript">
$(function () {
$.ajax({
type: 'POST',
url: 'default.aspx/sayhello',
data: JSON.stringify({ name: 'John' }),
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (msg) {
// Notice that msg.d is used to retrieve the result object
alert(msg.d);
}
});
});
</script>
</head>
<body>
<form id="Form1" runat="server">
</form>
</body>
</html>
PageMethods不限于简单的参数类型。可以使用任何类型的输入和输出，这将是自动JSON序列
PageMethods are not limited to simple argument types. You could use any type as input and output, it will be automatically JSON serialized.
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