Swap the toolbar

[gentledepp]

Is there a way to completely swap the toolbar on a page?
Or is the best approach to like "disable it" and create our own fake-tookbar?

Some of our views have very custom toolbars (search bar, dynamic title, and the like) and I am searching for a way to implement them.

[gentledepp]

Ah - I just answered this myself.
The NavigationBar.Header can be any object - for example a button:

<Page xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="ShellExample.Views.SecondView">
	
	<NavigationBar.Header>
		<Button Content="Filter"
		        Command="{Binding FilterCommand}"
		        Background="#00000000"></Button>
	</NavigationBar.Header>
	Welcome to Avalonia!
</Page>