This is a simple example of ToolTip with Button Control
<Button Content="Submit" ToolTipService.ShowDuration="1000" Height="23" HorizontalAlignment="Left" Margin="10,12,0,0" VerticalAlignment="Top" Width="75">
<Button.ToolTip>
<ToolTip >
<StackPanel>
<TextBlock FontWeight="Bold">Submit the Content About ASP.net</TextBlock>
<TextBlock>Submits the content and complete the action for the given form.</TextBlock>
</StackPanel>
</ToolTip>
</Button.ToolTip>
</Button>
Here we use ToolTipService.ShowDuration="1000" to set the display time of the ToolTip.