How to realize this result: Dropdown list in the Top Navigation bar?
Resolution Steps:
1. Use SharePoint Designer edit the site collection:
2. find below code:
<SharePoint:AspMenu
ID="TopNavigationMenuV4"
Runat="server"
EnableViewState="false"
DataSourceID="topSiteMap"
AccessKey="<%$Resources:wss,navigation_accesskey%>"
UseSimpleRendering="true"
UseSeparateCss="false"
Orientation="Horizontal"
StaticDisplayLevels="2"
MaximumDynamicDisplayLevels="1"
SkipLinkText=""
Css/>
Change from MaximumDynamicDisplayLevels="1" to MaximumDynamicDisplayLevels="4".
3.
Change from
ShowStartingNode="False" to ShowStartingNode="True"
SiteMapProvider="SPNavigationProvider" to SiteMapProvider="SPSiteMapProvider"
Delete: StartingNodeUrl="sid:1002"