Q:

How to Show Info About What This Button Does

I am developing a UWP app.  I want to show some info about a specific button whenever a user moves the cursor to that button.  Just like the below image.  I need your help.  How can I do this ? 

A:

This is tooltip you can see documentation here :
https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.tooltip
<!--  A button with a simple ToolTip. -- >
<Button Content="Button with a simple ToolTip."  ToolTipService. ToolTip="Simple ToolTip" />

A:

Something like this should work:
<Button x:Name="button" Content="Image ToolTip" HorizontalAlignment="Center">
  <ToolTipService. ToolTip>
    // put whatever you want to appear in tooltip here. 
  </ToolTipService. ToolTip>
</Button>

