/// 
    /// 所有需要进行登录控制的控制器基类    /// 
    public class BaseController : Controller     {        /// 
        /// 当前登录的用户属性        /// 
        public UserInfo CurrentUserInfo { get; set; }        /// 
        /// 重新基类在Action执行之前的事情        /// 
        /// 重写方法的参数        protected override void OnActionExecuting(ActionExecutingContext filterContext)        {            base.OnActionExecuting(filterContext);            //得到用户登录的信息            CurrentUserInfo = Session["UserInfo"] as UserInfo;            //判断用户是否为空            if (CurrentUserInfo == null)            {                Response.Redirect("/Login/Index");            }        }        protected override void OnException(ExceptionContext filterContext)        {            base.OnException(filterContext);            //错误记录            WHC.Framework.Commons.LogTextHelper.Error(filterContext.Exception);            // 当自定义显示错误 mode = On，显示友好错误页面            if (filterContext.HttpContext.IsCustomErrorEnabled)            {                filterContext.ExceptionHandled = true;                this.View("Error").ExecuteResult(this.ControllerContext);            }        }........................    }

public class HomeController : BaseController    {        public ActionResult Index()        {            if (CurrentUserInfo != null)            {                ViewBag.FullName = CurrentUserInfo.FullName;                ViewBag.Name = CurrentUserInfo.Name;            }            return View();        }................    }