假设我有一堂课
public class ItemController:Controller
{
public ActionResult Login(int id)
{
return View("Hi", id);
}
}
在不位于 Item 文件夹的页面上ItemController，我想创建一个指向该Login方法的链接。那么Html.ActionLink我应该使用哪种方法，应该传递哪些参数呢？
具体来说，我正在寻找方法的替换
Html.ActionLink(article.Title,
new { controller = "Articles", action = "Details",
id = article.ArticleID })
已在最近的 ASP.NET MVC 化身中退役。
我想你想要的是这样的：
Html.ActionLink(article.Title,
"Login", // <-- Controller Name.
"Item", // <-- ActionMethod
new { id = article.ArticleID }, // <-- Route arguments.
null // <-- htmlArguments .. which are none. You need this value
// otherwise you call the WRONG method ...
// (refer to comments, below).
)
这使用以下方法 ActionLink 签名：
public static string ActionLink(this HtmlHelper htmlHelper,
string linkText,
string controllerName,
string actionName,
object values,
object htmlAttributes)
两个论点被调换了
Html.ActionLink(article.Title,
"Item", // <-- ActionMethod
"Login", // <-- Controller Name.
new { id = article.ArticleID }, // <-- Route arguments.
null // <-- htmlArguments .. which are none. You need this value
// otherwise you call the WRONG method ...
// (refer to comments, below).
)
这使用以下方法 ActionLink 签名：
public static string ActionLink(this HtmlHelper htmlHelper,
string linkText,
string actionName,
string controllerName,
object values,
object htmlAttributes)
参数的顺序与 MVC2 相同，但不再需要 id 值：
Html.ActionLink(article.Title,
"Item", // <-- ActionMethod
"Login", // <-- Controller Name.
new { article.ArticleID }, // <-- Route arguments.
null // <-- htmlArguments .. which are none. You need this value
// otherwise you call the WRONG method ...
// (refer to comments, below).
)
这避免了将任何路由逻辑硬编码到链路中。
<a href="/Item/Login/5">Title</a>
这将为您提供以下 html 输出，假设：
article.Title = "Title"article.ArticleID = 5. .
routes.MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters
new { controller = "Home", action = "Index", id = "" } // Parameter defaults
);
我想补充一下Joseph Kingry 的回答。他提供了解决方案，但起初我也无法让它发挥作用，得到的结果就像 Adhip Gupta 一样。然后我意识到路线必须首先存在，并且参数需要与路线完全匹配。所以我有一个 id，然后是我的路线的文本参数，也需要包含在内。
Html.ActionLink(article.Title, "Login", "Item", new { id = article.ArticleID, title = article.Title }, null)
您可能想查看该方法。该RouteLink()方法允许您通过字典指定所有内容（链接文本和路由名称除外）。
我认为约瑟夫翻转了控制器和动作。首先是动作，然后是控制器。这有点奇怪，但签名的样子。
只是为了澄清一些事情，这是有效的版本（改编约瑟夫的例子）：
Html.ActionLink(article.Title,
"Login", // <-- ActionMethod
"Item", // <-- Controller Name
new { id = article.ArticleID }, // <-- Route arguments.
null // <-- htmlArguments .. which are none
)
那这个呢
<%=Html.ActionLink("Get Involved",
"Show",
"Home",
new
{
id = "GetInvolved"
},
new {
@class = "menuitem",
id = "menu_getinvolved"
}
)%>
Html.ActionLink(article.Title, "Login/" + article.ArticleID, 'Item")
如果您想穿上所有花哨的裤子，可以通过以下方式扩展它以使其能够做到这一点：
@(Html.ActionLink<ArticlesController>(x => x.Details(), article.Title, new { id = article.ArticleID }))
您需要将其放在System.Web.Mvc命名空间中：
public static class MyProjectExtensions
{
public static MvcHtmlString ActionLink<TController>(this HtmlHelper htmlHelper, Expression<Action<TController>> expression, string linkText)
{
var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext, htmlHelper.RouteCollection);
var link = new TagBuilder("a");
string actionName = ExpressionHelper.GetExpressionText(expression);
string controllerName = typeof(TController).Name.Replace("Controller", "");
link.MergeAttribute("href", urlHelper.Action(actionName, controllerName));
link.SetInnerText(linkText);
return new MvcHtmlString(link.ToString());
}
public static MvcHtmlString ActionLink<TController, TAction>(this HtmlHelper htmlHelper, Expression<Action<TController, TAction>> expression, string linkText, object routeValues)
{
var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext, htmlHelper.RouteCollection);
var link = new TagBuilder("a");
string actionName = ExpressionHelper.GetExpressionText(expression);
string controllerName = typeof(TController).Name.Replace("Controller", "");
link.MergeAttribute("href", urlHelper.Action(actionName, controllerName, routeValues));
link.SetInnerText(linkText);
return new MvcHtmlString(link.ToString());
}
public static MvcHtmlString ActionLink<TController>(this HtmlHelper htmlHelper, Expression<Action<TController>> expression, string linkText, object routeValues, object htmlAttributes) where TController : Controller
{
var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext, htmlHelper.RouteCollection);
var attributes = AnonymousObjectToKeyValue(htmlAttributes);
var link = new TagBuilder("a");
string actionName = ExpressionHelper.GetExpressionText(expression);
string controllerName = typeof(TController).Name.Replace("Controller", "");
link.MergeAttribute("href", urlHelper.Action(actionName, controllerName, routeValues));
link.MergeAttributes(attributes, true);
link.SetInnerText(linkText);
return new MvcHtmlString(link.ToString());
}
private static Dictionary<string, object> AnonymousObjectToKeyValue(object anonymousObject)
{
var dictionary = new Dictionary<string, object>();
if (anonymousObject == null) return dictionary;
foreach (PropertyDescriptor propertyDescriptor in TypeDescriptor.GetProperties(anonymousObject))
{
dictionary.Add(propertyDescriptor.Name, propertyDescriptor.GetValue(anonymousObject));
}
return dictionary;
}
}
Route Values这包括对and的两个覆盖HTML Attributes，此外，您的所有视图都需要添加：@using YourProject.Controllers或者您可以将其添加到您的web.config <pages><namespaces>
使用命名参数以提高可读性并避免混淆。
@Html.ActionLink(
linkText: "Click Here",
actionName: "Action",
controllerName: "Home",
routeValues: new { Identity = 2577 },
htmlAttributes: null)
使用 MVC5 我已经这样做了，它是 100% 工作代码....
@Html.ActionLink(department.Name, "Index", "Employee", new {
departmentId = department.DepartmentID }, null)
各位大佬可以借鉴一下...
这种类型使用：
@Html.ActionLink("MainPage","Index","Home")
MainPage : 文本名称 Index : Action View Home : HomeController
基本使用 ActionLink
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>_Layout</title>
<link href="@Url.Content("~/Content/bootsrap.min.css")" rel="stylesheet" type="text/css" />
</head>
<body>
<div class="container">
<div class="col-md-12">
<button class="btn btn-default" type="submit">@Html.ActionLink("AnaSayfa","Index","Home")</button>
<button class="btn btn-default" type="submit">@Html.ActionLink("Hakkımızda", "Hakkimizda", "Home")</button>
<button class="btn btn-default" type="submit">@Html.ActionLink("Iletişim", "Iletisim", "Home")</button>
</div>
@RenderBody()
<div class="col-md-12" style="height:200px;background-image:url(/img/footer.jpg)">
</div>
</div>
</body>
</html>