Bootstrap~多级导航(级联导航)的实现效果【附代码】

    @foreach (var item in Model)
    {
        if (item.Sons != null && item.Sons.Count > 0)
        {
               
        <li class="dropdown">
            <a data-submenu="" data-toggle="dropdown" tabindex="0">@item.MenuName<span class="caret"></span></a>
            <ul class="dropdown-menu">
                @foreach (var sub in item.Sons)
                {
                    if (sub.Sons != null && item.Sons.Count > 0)
                    {

                    <li class="dropdown-submenu">
                        <a tabindex="0">@sub.MenuName</a>
                        <ul class="dropdown-menu">
                            @foreach (var inner in sub.Sons)
                            {
                                <li>
                                    <a href="@inner.LinkUrl">@inner.MenuName</a>
                                </li>
                            }

                        </ul>
                    </li>
                    <li class="divider"></li>

                    }

                    else
                    {
                    <li><a href="@sub.LinkUrl">@sub.MenuName</a></li>
                    }
                }
            </ul>
        </li>
        }
        else
        {
        <li><a href="@item.LinkUrl">@item.MenuName</a></li>
        }
    }
</ul>