switched to yaml as filee format

MvvmStuff/DeserializationExtension.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Globalization;
+
+namespace ModernWpfPlayground.MvvmStuff
+{
+    public static class DeserializationExtension
+    {
+        public static object? Convert(object? value, Type propertyType)
+        {
+            if (value is null) return Activator.CreateInstance(propertyType);
+
+            if (propertyType.IsEnum && value is string s)
+            {
+                return Enum.Parse(propertyType, s);
+            }
+
+            return System.Convert.ChangeType(value, propertyType, CultureInfo.InvariantCulture);
+        }
+    }
+}