add listview style

HandyControlDemo/Data/MessageToken.cs

@@ -96,6 +96,8 @@
 
         public static readonly string GroupBoxDemoCtl = nameof(GroupBoxDemoCtl);
 
+        public static readonly string ListViewDemoCtl = nameof(ListViewDemoCtl);
+
         public static readonly string CommonWindow = nameof(CommonWindow);
 
         public static readonly string CustomNonClientAreaWindow = nameof(CustomNonClientAreaWindow);