Button will not work, unable to find suitable setter or getter - avaloniaui

Question

public class MainWindowViewModel : ViewModelBase
{
public MainWindowViewModel()
{
Queue = new QueuePanelViewModel();
Merge = new MergePanelViewModel();
CurrentQueuePanel ??= new QueuePanel();
CurrentMergePanel ??= new MergePanel();
_selectedView = CurrentQueuePanel;
}
public QueuePanelViewModel Queue { get; }
public MergePanelViewModel Merge { get; }
private UserControl _selectedView;
public UserControl SelectedView
{
get
{
return _selectedView;
}
set
{
_selectedView = value;
}
}
private static QueuePanel CurrentQueuePanel { get; set; }
private static MergePanel CurrentMergePanel { get; set; }
private void OnPanelButtonClickHandler(object sender, RoutedEventArgs e)
{
switch (((Button)sender).Tag)
{
case "Queue":
SelectedView = CurrentQueuePanel;
break;
case "Merge":
SelectedView = CurrentMergePanel;
break;
default:
((Button)sender).Content = "Somethin went wrong...";
break;
}
e.Handled = true;
}
}
And in the .axaml
<Button Tag="Queue" Click="{Binding OnPanelButtonClickHandler}" ClickMode="Press" Margin="0" Grid.Row="0" Grid.Column="0" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Content="Queue" Classes="btn" />
The button event will not work in any fashion I have tried. In this attempt It gives me the exception
'Unable to find suitable setter or adder for property Click of type Avalonia.Controls:Avalonia.Controls.Button for argument Avalonia.Markup:Avalonia.Data.Binding, available setter parameter lists are:
System.EventHandler`1[[Avalonia.Interactivity.RoutedEventArgs, Avalonia.Interactivity, Version=0.10.12.0, Culture=neutral, PublicKeyToken=c8d484a7012f9a8b]] Line 40, position 26.' Line number '40' and line position '26'.
If I use a Command instead of Click, it will compile however the button becomes disabled.

Answer 1

You are getting this exception because Click is the RoutedEvent and OnPanelButtonClickHandler should be in the *.axaml.cs code behind.
If you want to call the function in your view model from the view you should use Command property and bind to the function or implement a command in your view model.
In your case the button is inactive when you bind to the command because you do not pass the required parameters. This should work:
private void OnPanelButtonClickHandler(string parameter)
<Button Command="{Binding OnPanelButtonClickHandler}" CommandParameter="Queue" .../>
You can find more information in the docs