ASP.NET MVC显示成功消息

本文介绍了ASP.NET MVC显示成功消息的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

下面是一个例子方法，我有一个删除从我的应用程序的记录：

[授权（角色=新闻管理）]公众的ActionResult删除（INT ID）{ VAR ArticleToDelete =（来自于哪里_db.ArticleSet == a.storyId ID选择）.FirstOrDefault（）; _db.DeleteObject（ArticleToDelete）; _db.SaveChanges（）; 返回RedirectToAction（「指数」）;}

我想这样做是显示说像在索引视图一条消息：Lorem存有文章已被删除我会怎么做呢？谢谢

下面是我目前的指数方法，以防万一：

// INDEX [的HandleError] 公众的ActionResult指数（查询字符串，诠释？页） { //构建查询在_db.ArticleSet VAR ArticleQuery =从选择; //检查，如果他们是一个查询如果（！string.IsNullOrEmpty（查询）） { ArticleQuery = ArticleQuery.Where（一个= GT; a.headline.Contains（查询））; // MSP 2011-01-13您需要查询字符串发送到使用的ViewData查看计算机[查询] =查询; } //通过最新第一批订单的文章变种OrderedArticles = ArticleQuery.OrderByDescending（一个= GT; a.posted）; //需要有序的文章，并使用PaginatedList类进行分页他们4每页变种PaginatedArticles =新PaginatedList＆lt;物品＆GT;（OrderedArticles，页δλ0，4）; //分页的文章返回视图返回查看（PaginatedArticles）; }

解决方案

的一种方法是使用TempData的：

[授权（角色=新闻管理）]公众的ActionResult删除（INT ID）{ VAR ArticleToDelete =（来自于哪里_db.ArticleSet == a.storyId ID选择）.FirstOrDefault（）; _db.DeleteObject（ArticleToDelete）; _db.SaveChanges（）; TempData的[消息] =Lorem存有文章已被删除; 返回RedirectToAction（「指数」）;}

和索引中的的行动，你可以获取从TempData的此消息，并利用它。例如，你可以把它作为将被传递到您的视图视图模型的属性，以便它可以表现出来：

公众的ActionResult指数（）{ VAR消息= TempData的[消息]; // TODO：做一些像传递给视图消息}

更新：

例如：

公共类MyViewModel{ 公共字符串消息{搞定;组; }}

和则：

公众的ActionResult指数（）{ VAR模型=新MyViewModel { 消息= TempData的[消息]作为字符串; }; 返回查看（模型）;}

和强类型视图中：

＆LT; DIV＆GT;＆LT;％：Model.Message％GT;＆LT; / DIV＆GT;

Here is an example method I have that deletes a record from my app:

[Authorize(Roles = "news-admin")] public ActionResult Delete(int id) { var ArticleToDelete = (from a in _db.ArticleSet where a.storyId == id select a).FirstOrDefault(); _db.DeleteObject(ArticleToDelete); _db.SaveChanges(); return RedirectToAction("Index"); }

What I would like to do is show a message on the Index view that says something like: "Lorem ipsum article has been deleted" how would I do this? Thanks

Here is my current Index method, just in case:

// INDEX [HandleError] public ActionResult Index(string query, int? page) { // build the query var ArticleQuery = from a in _db.ArticleSet select a; // check if their is a query if (!string.IsNullOrEmpty(query)) { ArticleQuery = ArticleQuery.Where(a => a.headline.Contains(query)); //msp 2011-01-13 You need to send the query string to the View using ViewData ViewData["query"] = query; } // orders the articles by newest first var OrderedArticles = ArticleQuery.OrderByDescending(a => a.posted); // takes the ordered articles and paginates them using the PaginatedList class with 4 per page var PaginatedArticles = new PaginatedList<Article>(OrderedArticles, page ?? 0, 4); // return the paginated articles to the view return View(PaginatedArticles); }

解决方案

One way would be to use TempData:

[Authorize(Roles = "news-admin")] public ActionResult Delete(int id) { var ArticleToDelete = (from a in _db.ArticleSet where a.storyId == id select a).FirstOrDefault(); _db.DeleteObject(ArticleToDelete); _db.SaveChanges(); TempData["message"] = ""Lorem ipsum article has been deleted"; return RedirectToAction("Index"); }

and inside the Index action you could fetch this message from TempData and make use of it. For example you could pass it as a property of your view model which will be passed to the view so that it can show it:

public ActionResult Index() { var message = TempData["message"]; // TODO: do something with the message like pass to the view }

UPDATE:

Example:

public class MyViewModel { public string Message { get; set; } }

and then:

public ActionResult Index() { var model = new MyViewModel { Message = TempData["message"] as string; }; return View(model); }

and inside the strongly typed view:

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ASP.NET MVC显示成功消息