fixed #171

src/Shared/HandyControlDemo_Shared/ViewModel/Controls/SideMenuDemoViewModel.cs

@@ -16,5 +16,10 @@ namespace HandyControlDemo.ViewModel
             new RelayCommand<FunctionEventArgs<object>>(SwitchItem)).Value;
 
         private void SwitchItem(FunctionEventArgs<object> info) => Growl.Info((info.Info as SideMenuItem)?.Header.ToString());
+
+        public RelayCommand<string> SelectCmd => new Lazy<RelayCommand<string>>(() =>
+            new RelayCommand<string>(Select)).Value;
+
+        private void Select(string header) => Growl.Success(header);
     }
 }