Edition of primitives is changed

Infrastructure/UI/Converters/Units/UnitBase.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace StructureHelper.Infrastructure.UI.Converters.Units
+{
+    internal abstract class UnitBase : IValueConverter
+    {
+        public abstract string unitName { get;}
+        public abstract object Convert(object value, Type targetType, object parameter, CultureInfo culture);
+        public abstract object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture);
+    }
+}