概念问题 Application_BeginRequest 中Context.User.Identity.Name
Line 26: void Application_BeginRequest(Object sender, EventArgs e) {
Line 27: Response.Write("User.Identity.Name");
Line 28: Response.Write(Context.User.Identity.Name);
Line 29: Response.End
错误为Line 28
Object reference not set to an instance of an object.
Context是什么冬冬?