ASP.NET MVC：何时使用自定义 HTML 帮助器方法与 Html.RenderAction

ASP.NET MVC：何时使用自定义 HTML 帮助器方法与 Html.RenderAction？

csharp
public static MvcHtmlString IconLink(this HtmlHelper htmlHelper, string linkText, string actionName, string controllerName, string iconClass)
{
    var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext);
    var linkUrl = urlHelper.Action(actionName, controllerName);
    var linkTag = new TagBuilder("a");
    linkTag.MergeAttribute("href", linkUrl);
    linkTag.InnerHtml = $" {linkText}";
    return MvcHtmlString.Create(linkTag.ToString());
}

csharp
@Html.IconLink("Home", "Index", "Home", "fa fa-home")

csharp
public class UserController : Controller
{
    public ActionResult Avatar()
    {
        var model = GetCurrentUserAvatar(); // 获取当前用户的头像信息
        return PartialView(model);
    }
}

csharp
    
User Info
    @Html.RenderAction("Avatar", "User")