方法就是使用：ActionFilterAttribute
它的几个方法：OnActionExecuted，OnActionExecuting，OnResultExecuted和OnResultExecuting，它们记录一个action从加载到页面最终显示在浏览器的全过程，这个东西一般用在页面权限验证，LayOut页面控制上
这里面的几个方法执行顺序：OnActionExecuting action执行前
OnActionExecuted action执行后
OnResultExecuting 页面渲染后
OnResultExecuted 页面渲染结果
可以通过ActionFilterAttribute的特性，写个派生类，然后去覆盖OnActionExecuted
将layout页面修改（注意是修改，因为在action执行后layout已经是默认的布局页了）
/// <summary>
/// 自定义模板页面
/// </summary>
public class LayoutAttribute : ActionFilterAttribute
{
private readonly string _masterName;
public LayoutAttribute(string masterName)
{
_masterName = masterName;
}
/// <summary>
/// 页面渲染结束后执行
/// </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;
}
}
}
最后把它应用到controller或者action上，使用很简单
[Filters.Layout("_LayoutEd")]
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.Message = "Modify this template to jump-start your ASP.NET MVC application.";
return View();
}
[Filters.Layout("_LayoutEd")]
public ActionResult About()
{
ViewBag.Message = "Your app description page.";
return View();
}
public ActionResult Contact()
{
ViewBag.Message = "Your contact page.";
return View();
}
}