asp.net mvc2 controller attributeサンプル

asp.net mvc2フレームワークのコントローラー属性を定義するサンプルです。

ShowMessageAttribute.cs

namespace MvcApplicationEmpty.Attributes
{
    public class ShowMessageAttribute : ActionFilterAttribute
    {
        public string Message { get; set; }

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            //base.OnActionExecuting(filterContext);
            filterContext.HttpContext.Response.Write("[OnActionExecuting " + Message + "]");
        }
        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            //base.OnActionExecuted(filterContext);
            filterContext.HttpContext.Response.Write("[OnActionExecuted " + Message + "]");
        }
        public override void OnResultExecuting(ResultExecutingContext filterContext)
        {
            //base.OnResultExecuting(filterContext);
            filterContext.HttpContext.Response.Write("[OnResultExecuting " + Message + "]");
        }
        public override void OnResultExecuted(ResultExecutedContext filterContext)
        {
            //base.OnResultExecuted(filterContext);
            filterContext.HttpContext.Response.Write("[OnResultExecuted " + Message + "]");
        }
    }
}

XXXXController.cs

...
[ShowMessage(Message="Koma")]
public ViewResult Default()
{
    ViewData["greeting"] = "from HomeController.Default";
    return View();
}
...

出力結果：
[OnActionExecuting Koma][OnActionExecuted Koma][OnResultExecuting Koma]
Home.Default from HomeController.Default
[OnResultExecuted Koma]