循环递归方法

@functions
{
public string getLinks(Link link)
{
    StringBuilder linkBuilder = new StringBuilder();
    linkBuilder.Append("<div class="node"");
    if (link.Parent != null)
    {
        linkBuilder.Append("style="display: none"");
    }
    linkBuilder.Append(">");
    linkBuilder.Append(" <div class="item">");
    linkBuilder.Append("<div class="item-info ">");
    linkBuilder.Append("<span class="text-success">[" + link.Type.GetDisplayName() + "]</span>");
    linkBuilder.Append(" " + link.Name + "&nbsp; &nbsp; &nbsp; &nbsp; ");
    linkBuilder.Append("<a href="" + Url.Action(nameof(NY.TBWebApp.Controllers.Admin.LinkController.CreateLink), new { ParentId = link.Id, fromUrl = Context.Request.GetRequestUrl() }) + ""  class="btn btn-info btn-sm">添加下级</a>&nbsp; &nbsp;");
    linkBuilder.Append(" <a href=" + Url.Action(nameof(NY.TBWebApp.Controllers.Admin.LinkController.EditLink), new { Id = link.Id, fromUrl = Context.Request.GetRequestUrl() }) + " class="btn btn-info btn-sm">编辑</a>&nbsp; &nbsp;");
    linkBuilder.Append("<a href=" + Url.Action(nameof(NY.TBWebApp.Controllers.Admin.LinkController.DeleteLink), new { Id = link.Id, fromUrl = Context.Request.GetRequestUrl() }) + " class="btn btn-info btn-sm" onclick="return confirm('是否确认删除？'); ">删除</a>");
    linkBuilder.Append(" </div> <div class="clearfix"></div></div>");
    foreach (var childNode in link.Childs.OrderByDescending(m => m.SortNo).ThenBy(m => m.SortNo))
    {
        linkBuilder.Append(getLinks(childNode));
    }
    linkBuilder.Append(" </div>");
    return linkBuilder.ToString();
}
}