如何从MVC中的javascript调用服务器端函数? [英] How to call a server-side function from javascript in MVC?

问题描述

我正在MVC应用程序中进行修改，以禁止用户在单个会话中打开多个选项卡/窗口.我正在参考

I am doing amendments in my MVC application in order to disallow users to open more than one tab/ window within a single session. I am taking reference of this article (click here) in order to do that. This article is written for asp.net whereas I need to implement this feature for ASP.NET MVC. I think all this should be possible in MVC, however, I am not sure what should I do to re-write this

if(window.name != "<%=GetWindowName()%>")

GetWindowName()是我在Controller中创建的函数，它从Session对象返回"WindowName"键的值.如何在上面的javascript中读取其值?

GetWindowName() is a function I have created in my Controller, and it returns a value of "WindowName" key from Session object. How can I read its value in above javascript?

推荐答案

您可以为此编写控制器方法:

You can write a controller method for that:

public ActionResult GetWindowName()
{
  Session["WindowName"] = 
    Guid.NewGuid().ToString().Replace("-", "");
  return Json(Session["WindowName"].ToString());
}

然后通过ajax调用它:

Then call it through ajax:

$.get('@Url.Action("GetWindowName")', function(data){
    if(window.name != data) {
        // do what you need to do here
    }
})

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