MVC的Filters（拦截过滤）的Error页面，支持Ajax报错

报错拦截过滤到error页面

    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class, Inherited = true, AllowMultiple = true)]
    public class ExceptionAttribute : FilterAttribute, IExceptionFilter
    {
        /*报错回到报错页Error*/
        /*
         *CreateTime：2013‎年‎3‎月‎18‎日
         */
        public void OnException(ExceptionContext filterContext)
        {
            //报错回到报错页
            string message = string.Format("消息类型：{0}<br>消息内容：{1}<br>引发异常的方法：{2}<br>引发异常源：{3}"
                , filterContext.Exception.GetType().Name
                , filterContext.Exception.Message
                 , filterContext.Exception.TargetSite
                 , filterContext.Exception.Source + filterContext.Exception.StackTrace
                 );
            filterContext.Controller.ViewData["ErrorMessage"] = message;//filterContext.Exception.Message + " 亲！您犯错了哦！";//得到报错的内容
            filterContext.Result = new ViewResult()//new一个url为Error视图
            {
                ViewName = "Error",/*在Shard文件夹下的Error.cshtml*/
                ViewData = filterContext.Controller.ViewData//view视图的属性中的viewdata被赋值
            };

            filterContext.ExceptionHandled = true;
        }

    }

 修改上面功能，增加ajax错误判断

/*报错回到报错页Error*/
        /*
         *CreateTime：2013‎年‎3‎月‎18‎日
         */
        public void OnException(ExceptionContext filterContext)
        {
            //报错回到报错页
            string message = string.Format("消息类型：{0}<br>消息内容：{1}<br>引发异常的方法：{2}<br>引发异常源：{3}"
                , filterContext.Exception.GetType().Name
                , filterContext.Exception.Message
                 , filterContext.Exception.TargetSite
                 , filterContext.Exception.Source + filterContext.Exception.StackTrace
                 );
            filterContext.Controller.ViewData["ErrorMessage"] = message;//filterContext.Exception.Message + " 亲！您犯错了哦！";//得到报错的内容

            if (filterContext.HttpContext.Request.IsAjaxRequest())
            {
                filterContext.Result = new ContentResult()
                {
                    Content = "Error",
                    ContentEncoding = Encoding.UTF8
                };
            }
            else {
                filterContext.Result = new ViewResult()//new一个url为Error视图
                {
                    ViewName = "Error",/*在Shard文件夹下*/
                    ViewData = filterContext.Controller.ViewData//view视图的属性中的viewdata被赋值
                };
            }

            filterContext.ExceptionHandled = true;
        }