ASP.NET + C＃HttpContext.Current.Session为空（里面的WebService） [英] ASP.NET + C# HttpContext.Current.Session is null (Inside WebService)

问题描述

这是我发起会话

 protected void Session_Start(object sender, EventArgs e)
    {
        HttpContext.Current.Session["CustomSessionId"] = Guid.NewGuid();
    }

在我的下一个类库解决方案，我正在triyng进行​​访问和获取零异常：

in my solution under a class library i am triyng to access it and getting null exception:

string sess = HttpContext.Current.Session["CustomSessionId"] ;

这是我在web.config中和的app.config配置（在我的库）

this is my config in web.config and app.config (in my library)

    <system.serviceModel>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
  </system.serviceModel>
  <system.web>
      <pages enableSessionState = "true" />
      <httpModules>
        <add type="System.Web.SessionState.SessionStateModule" name="Session"/>
      </httpModules>
      <compilation debug="true" targetFramework="4.0" />
    </system.web>

（的app.config）

(app.config)

推荐答案

根据您的意见，似乎您试图在Web服务来访问会话。 Web服务是无状态的，这是他们应该的。如果要违背这个规律，让他们级状态，你可以使在这样一个经典的ASMX Web服务会话：

According to your comments it seems that you are trying to access the session in a web service. Web services are stateless and that's how they should be. If you want to violate this rule and make them stateful you could enable sessions in a classic ASMX web service like this:

[WebMethod(EnableSession = true)]
public void SomeMethod()
{
    ... invoke the method in your class library that uses Session
}

这是说，在类库使用 HttpContext.Current 是应该不惜一切代价避免一个非常做法。

This being said, using HttpContext.Current in a class library is a very practice that should be avoided at all price.

这篇关于ASP.NET + C＃HttpContext.Current.Session为空（里面的WebService）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！