Well, after it initially not working I managed to find the StandardStyles.xaml file which contains things like {StaticResource EditAppBarButtonStyle} that are used all over MSDN in examples. I uncommented the declaration of EditAppBarButtonStyle in StandardStyles.xaml so now the app does not crash but now it just shows up with this:

And the XAML code is:
<Page.BottomAppBar>
<AppBar x:Name="bottomAppBar" Padding="10,0,10,0" Background="Black">
<Grid>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Button x:Name="Edit" Tag="Edit" Content="{StaticResource EditAppBarButtonStyle}"/>
</StackPanel>
</Grid>
</AppBar>
</Page.BottomAppBar>
After searching all over I can’t figure this one out. I didn’t even see StandardStyles.xaml mention anywhere, I had to download a sample from MSDN and then go through every file and see what was different. Could anybody tell me why it does not show up with an icon? It is probably a quick thing that I just haven’t managed to find.
Also, is this sort of stuff actually mentioned anywhere on MSDN? Thanks
The problem is that you set the style to the
Contentproperty rather than theStyleproperty.Try:
In xaml, if you set an object to display that isn’t a visual object, then it will simply print the type of the object, which is why you saw
Windows.UI.Xaml.Stylesince that is the type of a style.