diff --git a/App.xaml b/App.xaml
index 9d987c4..0a3a638 100644
--- a/App.xaml
+++ b/App.xaml
@@ -3,11 +3,27 @@
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:local="clr-namespace:ModernWpfPlayground"
+    xmlns:propertyPresenter2="clr-namespace:ModernWpfPlayground.PropertyPresenter2"
     xmlns:ui="http://schemas.modernwpf.com/2019"
     StartupUri="MainWindow.xaml">
     <Application.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
+                <!--<ResourceDictionary>
+                    <Style
+                        x:Key="TextBoxStyle"
+                        BasedOn="{StaticResource {x:Type TextBox}}"
+                        TargetType="TextBox">
+                        <Style.Triggers>
+                            <Trigger Property="IsReadOnly" Value="True">
+                                <Setter Property="Background" Value="WhiteSmoke" />
+                            </Trigger>
+                        </Style.Triggers>
+                    </Style>
+                    <Style BasedOn="{StaticResource TextBoxStyle}" TargetType="TextBox" />
+                    <Style BasedOn="{StaticResource TextBoxStyle}" TargetType="propertyPresenter2:TextBoxEx" />
+
+                </ResourceDictionary>-->
                 <local:IntellisenseResourceDictionary Source="/ModernWpf;component/DesignTime/DesignTimeResources.xaml" />
                 <ui:ThemeResources />
                 <ui:XamlControlsResources />
diff --git a/MainWindow.xaml b/MainWindow.xaml
index b51e047..a043338 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -227,9 +227,14 @@
                             Symbol="x³"
                             Value="{Binding WelcomeMessage}" />
                         <propertyPresenter2:PropertyPresenter2
+                            IsReadOnly="True"
                             Label="Hallo"
                             Symbol="x²"
-                            Value="{Binding ValidationTest}" />
+                            Value="{Binding ValidationTest, UpdateSourceTrigger=PropertyChanged}" />
+                        <propertyPresenter2:PropertyPresenter2
+                            Label="Good bye"
+                            Symbol="x²"
+                            Value="{Binding ValidationTest, UpdateSourceTrigger=PropertyChanged}" />
                         <propertyPresenter2:PropertyPresenter2 Label="Hello" Value="{Binding BooleanValue}" />
                         <propertyPresenter2:PropertyPresenter2 Label="Hello">
                             <Slider
@@ -248,6 +253,7 @@
                             IsActive="{Binding BooleanValue}"
                             Visibility="{Binding VisibilityEnumTest}" />
                         <propertyPresenter2:PropertyPresenter2 Label="Visi" Value="{Binding VisibilityEnumTest}" />
+                        <TextBox Text="Dummy" />
                     </ui:SimpleStackPanel>
                 </TabItem>
             </TabControl>