C# 如何使用MvcSiteMapProvider从Mvc.sitemap获取节点的url

我想使用像“key”这样的属性从Mvc.sitemap文件中获取url？我想从助手那里打电话。我只是不知道如何使用mvcsitemap类从文件中检索节点来生成url。

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提前谢谢

2小时后，总共4小时，结果如下：

public static class MyHelpers
{
    private static Dictionary<string, object> SourceMetadata = new Dictionary<string, object> { { "HtmlHelper", typeof(MenuHelper).FullName } };

    public static MvcSiteMapNode GetNodeByKey(this MvcSiteMapHtmlHelper helper, string nodeKey)
    {
        SiteMapNode node = helper.Provider.FindSiteMapNodeFromKey(nodeKey);

        var mvcNode = node as MvcSiteMapNode;

        return mvcNode;
    }
}

public static MvcHtmlString MapLink(this MvcSiteMapHtmlHelper htmlHelper, string nodeKey)
    {
        return htmlHelper.MapLink(nodeKey, null, null);
    }
    public static MvcHtmlString MapLink(this MvcSiteMapHtmlHelper htmlHelper, string nodeKey, string linkText)
    {
        return htmlHelper.MapLink(nodeKey, linkText, null);
    }
    public static MvcHtmlString MapLink(this MvcSiteMapHtmlHelper htmlHelper, string nodeKey, string linkText, object htmlAttributes)
    {
        MvcSiteMapNode myNode = GetNodeByKey(htmlHelper, nodeKey);
        //we build the a tag
        TagBuilder builder = new TagBuilder("a");
        // Add attributes
        builder.MergeAttribute("href", myNode.Url);
        if (htmlAttributes != null)
        {
            builder.MergeAttributes(new RouteValueDictionary(htmlAttributes), true);
        }
        if (!string.IsNullOrWhiteSpace(linkText))
        {
            builder.InnerHtml = linkText;
        }
        else
        {
            builder.InnerHtml = myNode.Title;
        }
        string link = builder.ToString();
        return  MvcHtmlString.Create(link);
    }