Allowed ErrorWindow to close properly.

PcgsInvUi/Views/ErrorWindow.axaml

@@ -12,8 +12,7 @@
                Margin="15"
                Content="{Binding DisplayedMessage}" />
         <Button Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Bottom"
-                Margin="10" Name="CloseButton" IsEnabled="False"
-                Content="Use X button" Command="{Binding CloseCommand, Mode=OneWay}" 
-                CommandParameter="{Binding ElementName=NameErrorWindow}"/>
+                Margin="10" Name="CloseButton" IsEnabled="True"
+                Content="OK" Command="{Binding CloseCommand, Mode=OneWay}" />
     </Grid>
 </Window>

PcgsInvUi/Views/ErrorWindow.axaml.cs

@@ -1,5 +1,7 @@
+using System;
 using Avalonia.ReactiveUI;
 using PcgsInvUi.ViewModels;
+using ReactiveUI;
 
 namespace PcgsInvUi.Views; 
 
@@ -7,5 +9,6 @@ public partial class ErrorWindow : ReactiveWindow<ErrorWindowViewModel> {
     public ErrorWindow()
     {
         InitializeComponent();
+        this.WhenActivated(d => d(ViewModel!.CloseCommand.Subscribe(Close)));
     }
-}
+}

PcgsInvUi/Views/MainWindow.axaml.cs

@@ -18,7 +18,7 @@ public partial class MainWindow : ReactiveWindow<MainWindowViewModel> {
         // this.WhenActivated(d => d(ViewModel!.ShowFindWindow.RegisterHandler(ShowFindWindowAsync)));
     }
 
-    private async Task ShowDeleteWindowAsync(InteractionContext<DeleteWindowViewModel, Boolean> interaction) {
+    private async Task ShowDeleteWindowAsync(InteractionContext<DeleteWindowViewModel, bool> interaction) {
         var window = new DeleteWindow();
         window.DataContext = interaction.Input;
 
@@ -53,11 +53,11 @@ public partial class MainWindow : ReactiveWindow<MainWindowViewModel> {
         }
     }
     
-    private async Task ShowErrorWindowAsync(InteractionContext<ErrorWindowViewModel, Unit> interaction) {
+    private async Task ShowErrorWindowAsync(InteractionContext<ErrorWindowViewModel, bool> interaction) {
         var window = new ErrorWindow();
         window.DataContext = interaction.Input;
 
-        await window.ShowDialog(this);
-        interaction.SetOutput(Unit.Default);
+        var result = await window.ShowDialog<bool>(this);
+        interaction.SetOutput(result);
     }
-}
+}