add Empty

src/Shared/HandyControl_Shared/Themes/Styles/Empty.xaml

@@ -0,0 +1,11 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:hc="clr-namespace:HandyControl.Controls"
+                    xmlns:themes="clr-namespace:HandyControl.Themes">
+
+    <ResourceDictionary.MergedDictionaries>
+        <themes:SharedResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Styles/Base/EmptyBaseStyle.xaml"/>
+    </ResourceDictionary.MergedDictionaries>
+
+    <Style BasedOn="{StaticResource EmptyBaseStyle}" TargetType="hc:Empty"/>
+
+</ResourceDictionary>