了解ASP.NET MVC几种ActionResult的本质：EmptyResult & ContentResult

旧城等待， 2022-08-08 14:39 136阅读 0赞

原文：[http://www.cnblogs.com/artech/archive/2012/08/13/action-result-01.html][http_www.cnblogs.com_artech_archive_2012_08_13_action-result-01.html]

public class HomeController : Controller
        {
            //其他成员
            public ActionResult Css()
            {
                HttpCookie cookie = Request.Cookies["theme"] ?? new HttpCookie("theme", "default");
                switch (cookie.Value)
                {
                    case "Theme1": return Content("body{font-family: SimHei; font-size:1.2em}", "text/css");
                    case "Theme2": return Content("body{font-family: KaiTi; font-size:1.2em}", "text/css");
                    default: return Content("body{font-family: SimSong; font-size:1.2em}", "text/css");
                }
            }
        }

public class HomeController : Controller
        {
            //其他成员
            public ActionResult Index()
            {
                HttpCookie cookie = Request.Cookies["theme"] ?? new HttpCookie("theme", "default");
                ViewBag.Theme = cookie.Value;
                return View();
            }
    
            [HttpPost]
            public ActionResult Index(string theme)
            {
                HttpCookie cookie = new HttpCookie("theme", theme);
                cookie.Expires = DateTime.MaxValue;
                Response.SetCookie(cookie);
                ViewBag.Theme = theme;
                return View();
            }
        }

<html>
 <head>
 <title>主题设置</title> 
 <link type="text/css" rel="Stylesheet" href="@Url.Action("Css")" />
 </head>
 <body>
 @using(Html.BeginForm())
 {
 string theme = ViewBag.Theme.ToString(); 
 @Html.RadioButton("theme", "Default", theme == "Default")默认主题（宋体） 
 @Html.RadioButton("theme", "Theme1", theme == "Theme1")主题1（黑体） 
 @Html.RadioButton("theme", "Theme2", theme == "Theme2")主题2（楷体） 
 <input type="submit" value="保存" />
 }
 </body>
 </html>

[http_www.cnblogs.com_artech_archive_2012_08_13_action-result-01.html]: http://www.cnblogs.com/artech/archive/2012/08/13/action-result-01.html