TreeDataGridDemo, GitHub snapshot to ReactiveUI to CommunityToolKit.Mvvm in proper MVVM form about avalonia.controls.treedatagrid HOT 2 OPEN

In some derivative testing, I found that in the CommunityToolkit.Mvvm variant view would not be initialized when the tab was selected the first time. This was because the load function for the ViewModel's drive data had not been set up before the view was initialized. Adding setting the view DataContext in the View's constructor solves this issue. See the code below.

namespace TreeDataGridDemo.Views
{
    public partial class WikipediaPageView : UserControl
    {
        public WikipediaPageView()
        {
            InitializeComponent();

            this.DataContext = new WikipediaPageViewModel();
        }
    }
}

from avalonia.controls.treedatagrid.

Avalonia.Controls.TreeDataGridDemo.2024-02-26.zip file attached contains working ReactiveUI and CommunityToolkit.MVVM MVVM form projects as an alternative to the equivalent in the GitHub TreeDataGrid distribution. This new code base has been updated to include the initialization update noted above as well as removing the use of stack panel in MainWindow.axaml as the TabControl Views container for TreeDataGrid views. (See issues and solutions found posted separately relating to the TreeDataGrid scroll bars being functional and visible).

I hope this work provides a Rosetta Stone-like capability for other developers. Going through this code normalization, transformation, and evolution exercise for the two Avalonia MVVM support systems has been an eye-opening learning experience.

Avalonia.Controls.TreeDataGridDemo 2024-02-26.zip

from avalonia.controls.treedatagrid.