change UI to UI.WinForms

Pilz.UI.WinForms.Telerik/Extensions/RadListDataItemCollectionExtensions.cs

@@ -0,0 +1,37 @@
+using Telerik.WinControls.UI;
+
+namespace Pilz.UI.WinForms.Telerik.Extensions;
+
+public static class RadListDataItemCollectionExtensions
+{
+    public static IEnumerable<RadListDataItem> AddEnumValues<T>(this RadListDataItemCollection @this) where T : struct, Enum
+    {
+        return @this.AddEnumValues<T>(false);
+    }
+
+    public static IEnumerable<RadListDataItem> AddEnumValues<T>(this RadListDataItemCollection @this, bool clearCollection) where T : struct, Enum
+    {
+        return @this.AddEnumValues<T>(clearCollection, null, null);
+    }
+
+    public static IEnumerable<RadListDataItem> AddEnumValues<T>(this RadListDataItemCollection @this, bool clearCollection, Func<T, bool>? filter, Func<T, string?>? format) where T : struct, Enum
+    {
+        var values = Enum.GetValues(typeof(T));
+        var items = new List<RadListDataItem>();
+
+        format ??= v => Enum.GetName(typeof(T), v);
+
+        if (clearCollection)
+            @this.Clear();
+
+        foreach (T value in values)
+        {
+            if (filter is null || filter(value))
+                items.Add(new(format(value), value));
+        }
+
+        @this.AddRange(items);
+
+        return items;
+    }
+}