扩展方法中的HtmlAttributes

Question

我正在使用MVC 5,我正在尝试编写一些Bootstrap扩展方法.我的目标是用'覆盖' Html.ActionLink方法Html.BootstrapLinkButton.该BootstrapLinkButton方法应生成一个"btn btn-default"自动附加的css类的链接.我的代码到目前为止:

public static MvcHtmlString BootstrapLinkButton(this HtmlHelper htmlHelper, 
    string linkText,string actionName, string controllerName, 
    object routeValues = null, object htmlAttributes = null)
    {
        var attributes = 
            HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);

        if (attributes.ContainsKey("class"))
        {
            object value;
            attributes.TryGetValue("class", out value);
            value = (value as string) + " btn btn-default";
            attributes["class"] = value;
        }
        else
        {
            attributes["class"] = "btn btn-default";
        }

        return htmlHelper.ActionLink(
            linkText, actionName, controllerName, routeValues, 
            new Dictionary<string, object>(attributes));
    }

这给了我HTML中的以下结果:

<a comparer="System.Collections.Generic.GenericEqualityComparer`1[System.String]"
   count="3"
   keys="System.Collections.Generic.Dictionary`2
         +KeyCollection[System.String,System.Object]"    
   values="System.Collections.Generic.Dictionary`2
           +ValueCollection[System.String,System.Object]" 
   href="/test/test/">
     Test
</a>

我搜索了互联网,但似乎没有解决这个问题.有谁知道解决这个问题的神奇代码？

Answer 1

如果我的解决方案可以帮助任何人，那就是：

    public static MvcHtmlString BootstrapLinkButton(this HtmlHelper htmlHelper, 
        string linkText, 
        string actionName, 
        string controllerName = null, 
        object routeValues = null, 
        object htmlAttributes = null,
        string btnStyle = "default")
    {
        var attributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes);
        controllerName = 
            controllerName ?? 
            HttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString();

        if (attributes.ContainsKey("class"))
        {
            object value;
            attributes.TryGetValue("class", out value);
            value = string.Format("{0} btn btn-{1}", (value as string), btnStyle);
            attributes["class"] = value;
        }
        else
        {
            attributes["class"] = string.Format("btn btn-{0}", btnStyle);
        }

        return htmlHelper.ActionLink(
            linkText, 
            actionName, 
            controllerName, 
            new RouteValueDictionary(routeValues), 
            new Dictionary<string, object>(attributes));
    }
}