How to show the tooltip for NumericButtons in the SfDataPager?
In the SfDataPager, you can show the ToolTip for NumericButton by writing the custom style as follows.
<Window.Resources>
<Style TargetType="Syncfusion:NumericButton">
<Setter Property="ToolTip" Value="{Binding}" />
</Style>
</Window.Resources>
Refer to the following screenshot that shows the tooltip for numeric values on the NumericButtons.

Sample Link: