实时代码在 IIS 和 ASP.NET Web Server 中运行，但不在 IIS Express 中运行
最近安装了 IIS Express，我希望它能让我的生活更轻松，但我几乎立刻就遇到了问题。
考虑以下代表一些实时代码的内容：
Public Shared Function GetServiceId() As String
Dim principal As MyCustomAuthentication.Principal.MyPrincipal
principal = CType(Thread.CurrentPrincipal, MyCustomAuthentication.Principal.MyPrincipal)
.
.
.
.
End Function
在 ASP.NET Web 服务器 (Cassini) 下运行代码一切正常，我可以看到 Thread.CurrentPrincipal 的类型为 MyCustomAuthentication.Principal.MyPrincipal。
在 IIS Express 下运行同一行会抛出 InvalidCastException 并检查我发现它现在是 System.Security.Principal.GenericPrincipal 的类型，这很令人困惑，因为其他任何内容都没有改变。
我可以确认 MyCustomAuthentication.Principal.MyPrincipal 实现了 IPrincipal 并记住这是实时代码，它当前已部署并正在运行。
谁能解释一下这里发生的事情吗？
Having recently installed IIS Express I was hoping that it was going to make life easier for me, but I've run into a problem almost straight away.
Consider the following which is representative of some live code:
Public Shared Function GetServiceId() As String
Dim principal As MyCustomAuthentication.Principal.MyPrincipal
principal = CType(Thread.CurrentPrincipal, MyCustomAuthentication.Principal.MyPrincipal)
.
.
.
.
End Function
Running the code under the ASP.NET Web Server (Cassini) everything is fine and I can see that Thread.CurrentPrincipal is of type MyCustomAuthentication.Principal.MyPrincipal.
Running under IIS Express this same line throws an InvalidCastException and checking the type I find it is now of System.Security.Principal.GenericPrincipal which is confusing as nothing else has changed.
I can confirm that MyCustomAuthentication.Principal.MyPrincipal implements IPrincipal and remember this is Live code, it is currently deployed and working.
Can anyone shed any light on what is going on here?
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我认为你想要 HttpContext.Current.User 。当前用户的身份与当前线程的身份不同。
I think you want HttpContext.Current.User instead. The identity of the current User isn't the same as the identity of the current thread.