如何处理在ASP.NET MVC中的会话数据 [英] How to handle session data in ASP.NET MVC

问题描述

比方说，我要存储一个名为 LANGUAGE_ID 在会话变量。我想我也许可以做类似以下内容：

Let's say I want to store a variable called language_id in the session. I thought I might be able to do something like the following:

public class CountryController : Controller
{ 
    [WebMethod(EnableSession = true)]  
    [AcceptVerbs(HttpVerbs.Post)]  
    public ActionResultChangelangue(FormCollection form)
    {
        Session["current_language"] = form["languageid"];
        return View();    
    } 
}

但是，当我检查会话它总是空。怎么来的？我在哪里可以找到有关ASP.NET MVC处理会话的一些信息？

But when I check the session it's always null. How come? Where can I find some information about handling session in ASP.NET MVC?

推荐答案

的不严格相关的问题本身的，但更多的是保持控制器（合理的）强类型的，干净的，我会的一种方式还建议会话外观像类包装在其中的任何会话信息，让你阅读和在一个很好的方式写。

Not strictly related to the question itself, but more as a way of keeping controllers (reasonably) strongly typed and clean, I would also recommend a Session facade like class which wraps any session information in it, so that you read and write it in a nice way.

示例：

public static class SessionFacade
{
  public static string CurrentLanguage
  {
    get
    {
      //Simply returns, but you could check for a null
      //and initialise it with a default value accordingly...
      return HttpContext.Current.Session["current_language"].ToString();
    }
    set
    {
      HttpContext.Current.Session["current_language"] = value;
    }
  }
}

用法：

public ActionResultChangelangue(FormCollection form)
{
  SessionFacade.CurrentLanguage = form["languageid"];
  return View();
}

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