How to reduce the vertical spacing between parent and child nodes.
I tried this but doesn't work.
<asp:TreeView ID="TreeViewArtMaterial" runat="server" EnableViewState="true"
width="250px" SkinID="NoImage"
onDataBound="TreeViewArtMaterial_DataBound"
ParentNodeStyle-ChildNodesPadding="0" ParentNodeStyle-VerticalPadding="0" ParentNodeStyle-NodeSpacing="0"
DataSourceID="SiteMapDataSource1" ExpandDepth=1>
<SelectedNodeStyle Font-Bold="true" ForeColor="#249c98" VerticalPadding="0" NodeSpacing="0" />
</asp:TreeView>