Thread.CurrentPrincipal.Identity将执行与HttpContext.CurrentContext...

它将返回与当前执行线程关联的身份，在大多数情况下，该身份是登录的用户*.

It will return the identity associated with the current executing thread, which in most cases, is the logged on user*.

注意:*如果您使用委派/模拟或作为服务帐户运行，它将返回该线程所使用的身份的帐户，但是在您的情况下，听起来好像您在执行任何上下文操作身份切换.

Note: *If you are using delegation/impersonation or running as a service account, it will return the account of which ever identity the thread is under, but in your case, it doesn't sound like you are doing any context identity switching.