A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
Switch to XAML view and try the next example:
<Window . . . Height="450" Width="800">
<Grid>
<Button Content="Button" HorizontalAlignment="Left" Margin="50,0,0,50"
Width="150" Height="50" VerticalAlignment="Bottom"/>
</Grid>
</Window>
where “...” is something that is already added by system and you should not change.
Show your XAML too.