Question

我正在使用ASP.NET MVC 4，并且在这样的视图中有一个准备好的URL：

var sectoionUrl = Url.Action("DisplayArticleSection", new { id = sectionId });

是否有任何帮助者使用准备好的 sectionUrl 呈现部分视图，而不是通过帮助器再次创建它：

@Html.Action("DisplayArticleSection", new { id = sectionId })

像这样的伪代码：

@Html.RenderUrl(sectionUrl)

Answer 1

自定义HtmlHelper：

public static class RenderUrlHelper
{
    public static void RenderUrl(this HtmlHelper helper, string originUrl)
    {
        var originRequest = helper.ViewContext.RequestContext.HttpContext.Request;

        if (!Uri.IsWellFormedUriString(originUrl, UriKind.Absolute))
        {
            originUrl = new Uri(originRequest.Url, originUrl).AbsoluteUri;
        }

        int queryIdx = originUrl.IndexOf('?');
        string queryString = null;
        string url = originUrl;

        if (queryIdx != -1)
        {
            url = originUrl.Substring(0, queryIdx);
            queryString = originUrl.Substring(queryIdx + 1);
        }

        // Extract the data and render the action.    
        var request = new HttpRequest(null, url, queryString);
        var response = new HttpResponse(new StringWriter());
        var httpContext = new HttpContext(request, response);
        var routeData = RouteTable.Routes.GetRouteData(new HttpContextWrapper(httpContext));
        var values = routeData.Values;
        string controllerName = values["controller"] as string;
        string actionName = values["action"] as string;
        var valuesCollection = HttpUtility.ParseQueryString(queryString);
        RouteValueDictionary routeValues = new RouteValueDictionary(valuesCollection.AllKeys.ToDictionary(k => k, k => (object)valuesCollection[k]));
        helper.RenderAction(actionName, controllerName, routeValues);
    }
}

测试自定义HtmlHelper的一些代码：

的TestController：

public class TestController : Controller
{
    public ActionResult Index(string title, int number)
    {
        TestModel model = new TestModel { Title = title, Number = number };
        return PartialView(model);
    }
}

TestController索引视图：

@model TestModel

<h1>Title: @Model.Title</h1>
<h2>Number: @Model.Number</h2>

TestModel：

public class TestModel
{
    public string Title { get; set; }
    public int Number { get; set; }
}

在任何视图中使用：

@{
    var actionUrl = Url.Action("Index", "Test", new { number = 123, title = "Hello Url Renderer" });
    Html.RenderUrl(actionUrl);
}

Answer 2

您可以使用以下HTML代码渲染部分视图使用

@Html.RenderPartial("NameOfPartialView")
@Html.Partial("NameOfPartialView")

OR

您可以创建自定义HTML帮助程序以创建功能，例如

@Html.RenderUrl(sectionUrl)

以下网址会逐步显示如何创建自定义HTML帮助程序。

Create Custom HTML Helper

如何使用url渲染部分视图

2 个答案: