How to knit color in Avalonia

Question

In WPF, it was a bit more confusing how to bind colors like background color to the viewmodel property.

Are there other ways to bind colors in Avalonia?

Or is this example a good way?

Avalonia view

<Window xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:Button.Views.MainWindow"
    Title="Button" Width="700">
  <StackPanel Grid.Column="2" Orientation="Vertical" Gap="8" Margin="10"> 
      <TextBox Name="Textbox3" Text="{Binding Textbox3Text}" Foreground="{Binding Textbox3Foreground}"/>    
  </StackPanel>
</Window>

Avalonia ViewModel

public class MainWindowViewModel
{
    private IBrush _textbox3Foreground;

    public IBrush Textbox3Foreground
    {
        get { return _textbox3Foreground; }
        set
        {
            this.RaiseAndSetIfChanged(ref _textbox3Foreground, value);
        }
    }    

    public MainWindowViewModel()
    {
         Textbox3Foreground = Brushes.DarkOliveGreen;            
    }
}

Answer 1

Make sure you install the DataContextwindows in an instance of the class of your view model:

<Window xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:Button.Views.MainWindow"
    Title="Button" Width="700">
    <Window.DataContext>
        <local:MainWindowViewModel />
    </Window.DataContext>
    <StackPanel Grid.Column="2" Orientation="Vertical" Gap="8" Margin="10">
        <TextBox Name="Textbox3" Text="{Binding Textbox3Text}" Foreground="{Binding Textbox3Foreground}"/>
    </StackPanel>
</Window>

In general, you usually don’t define things related to the user interface, such as colors in the view model. Such things are usually defined directly in the view without any bindings. But you can definitely get attached to a property Brushlike this.