使用MvcContrib的强类型RedirectToAction和锚标记(hashtag)？

Question

我正在使用MvcContrib的强类型RedirectToAction()从一个控制器动作重定向到另一个,同时避免我的应用程序流中的魔术字符串,如下所示:

this.RedirectToAction<FooController>(c => c.Bar());

然后重定向到

/foo/bar/    

...但是现在我希望能够在末尾重定向到带有anchor/hashtag的URL,并将窗口滚动到<a name="yarrr" />标记,如下所示:

/foo/bar/#yarrr  

我可以将标签放在TempData []中,将其写入javascript变量并通过javascript滚动窗口 - 但我宁愿遵循惯例并将主题标签作为我的URL的结尾.

任何想法或自制的解决方案？MvcContrib似乎不支持它.

Answer 1

我不知道在MvcContrib中存在这样的ActionLink重载,但写一个会很简单:

using System;
using System.Linq.Expressions;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Html;
using System.Web.Routing;

public static class HtmlExtensions
{
    public static IHtmlString ActionLink<TController>(
        this HtmlHelper html,
        Expression<Action<TController>> action,
        string linkText,
        object htmlAttributes,
        string fragment
    ) where TController : Controller
    {
        var routeValues = Microsoft.Web.Mvc.Internal.ExpressionHelper
            .GetRouteValuesFromExpression(action);
        return html.RouteLink(
            linkText: linkText,
            routeName: null,
            protocol: null,
            hostName: null,
            fragment: fragment,
            routeValues: routeValues,
            htmlAttributes: new RouteValueDictionary(htmlAttributes)
        );
    }
}

然后在你看来:

@(Html.ActionLink<FooController>(c => c.Bar(), "click me", null, "yarrr"))

更新:

显然我误解了你的问题,因为你RedirectToAction在控制器中寻找一个方法,而不是在视图中.我的答案和以前一样:I am not aware of the existence of such an RedirectToAction overload in MvcContrib but writing one would be trivial:

using System;
using System.Linq.Expressions;
using System.Web.Mvc;

public static class HtmlExtensions
{
    public static RedirectResult RedirectToAction<TController>(
        this Controller controller,
        Expression<Action<TController>> action,
        string fragment
    ) where TController : Controller
    {
        var routeValues = Microsoft.Web.Mvc.Internal.ExpressionHelper
            .GetRouteValuesFromExpression(action);
        var urlHelper = new UrlHelper(controller.ControllerContext.RequestContext);
        return new RedirectResult(
            UrlHelper.GenerateUrl(
                routeName: null,
                actionName: null,
                controllerName: null,
                protocol: null,
                hostName: null,
                fragment: fragment,
                routeValues: routeValues,
                routeCollection: urlHelper.RouteCollection,
                requestContext: controller.ControllerContext.RequestContext,
                includeImplicitMvcValues: true
            )
        );
    }
}

然后在你的控制器内:

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return this.RedirectToAction<FooController>(c => c.Bar(), "yarrr");
    }
}