// 摘(zhai)要:
    //     Represents the base class for filter attributes.
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]
    public abstract class ActionFilterAttribute : FilterAttribute, IActionFilter, IResultFilter
    {
        // 摘要:
        //     Initializes a new instance of the System.Web.Mvc.ActionFilterAttribute class.
        protected ActionFilterAttribute();

        // 摘要:
        //     Called by the ASP.NET MVC framework after the action method executes.
        //
        // 參數:
        //   filterContext:
        //     The filter context.
        public virtual void OnActionExecuted(ActionExecutedContext filterContext);
        //
        // 摘(zhai)要:
        //     Called by the ASP.NET MVC framework before the action method executes.
        //
        // 參數:
        //   filterContext:
        //     The filter context.
        public virtual void OnActionExecuting(ActionExecutingContext filterContext);
        //
        // 摘要:
        //     Called by the ASP.NET MVC framework after the action result executes.
        //
        // 參數:
        //   filterContext:
        //     The filter context.
        public virtual void OnResultExecuted(ResultExecutedContext filterContext);
        //
        // 摘要:
        //     Called by the ASP.NET MVC framework before the action result executes.
        //
        // 參數(shu):
        //   filterContext:
        //     The filter context.
        public virtual void OnResultExecuting(ResultExecutingContext filterContext);
    }

 /// <summary>
    /// 自定義(yi)模板頁面
    /// </summary>
    public class LayoutAttribute : ActionFilterAttribute
    {
        private readonly string _masterName;
        public LayoutAttribute(string masterName)
        {
            _masterName = masterName;
        }
        /// <summary>
        /// 頁面渲染結束后執(zhi)行(xing)
        /// </summary>
        /// <param name="filterContext"></param>
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            base.OnActionExecuted(filterContext);
            var result = filterContext.Result as ViewResult;
            if (result != null)
            {
                result.MasterName = _masterName;
            }
        }
    }