more reactive UI work

Stars Assistant/Views/MainWindow.axaml

@@ -19,10 +19,10 @@
 
     <TabControl>
         <TabItem Header="Home">
-            Welcome to Stars Assistant!
+            <TextBlock x:Name="WelcomeText">Hi</TextBlock>
         </TabItem>
         <TabItem Header="DataGrid">
-            <DataGrid ItemsSource="{Binding Planets}"   
+            <DataGrid x:Name="PlanetsGrid"
                 AutoGenerateColumns="True" IsReadOnly="True" 
                 GridLinesVisibility="All"
                 FrozenColumnCount="1"

Stars Assistant/Views/MainWindow.axaml.cs

@@ -4,6 +4,8 @@ using System.Diagnostics;
 using System;
 using StarsAssistant.ViewModels;
 using Avalonia.Markup.Xaml;
+using ReactiveUI;
+using System.Reactive.Disposables;
 
 namespace StarsAssistant.Views;
 
@@ -11,6 +13,21 @@ public partial class MainWindow : ReactiveWindow<MainWindowViewModel>
 {
     public MainWindow()
     {
-        AvaloniaXamlLoader.Load(this);
+        this.WhenActivated(
+
+            disposables => {
+                this.OneWayBind(ViewModel,
+                        viewModel => viewModel.Planets,
+                        view => view.PlanetsGrid.ItemsSource)
+                    .DisposeWith(disposables);
+                this.OneWayBind(ViewModel, 
+                        vm => vm.WelcomeMessage, 
+                        v => v.WelcomeText.Text)
+                    .DisposeWith(disposables);
+            }
+        );
+        
+        InitializeComponent();
     }
+
 }