fix: fix IPV4Box key handling in DataGrid. Add a SampleBox project for extra testing. Upgrade to released version.

demo/Sandbox/ViewLocator.cs

@@ -0,0 +1,32 @@
+using System;
+using Avalonia.Controls;
+using Avalonia.Controls.Templates;
+using Sandbox.ViewModels;
+
+namespace Sandbox;
+
+public class ViewLocator : IDataTemplate
+{
+    public Control? Build(object? data)
+    {
+        if (data is null)
+            return null;
+
+        var name = data.GetType().FullName!.Replace("ViewModel", "View", StringComparison.Ordinal);
+        var type = Type.GetType(name);
+
+        if (type != null)
+        {
+            var control = (Control)Activator.CreateInstance(type)!;
+            control.DataContext = data;
+            return control;
+        }
+
+        return new TextBlock { Text = "Not Found: " + name };
+    }
+
+    public bool Match(object? data)
+    {
+        return data is ViewModelBase;
+    }
+}