Fixed Watermarks so that they cannot receive focus.

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/CalculatorUpDown/Themes/Generic.xaml

@@ -51,7 +51,7 @@
     </Style>
 
     <DataTemplate x:Key="DefaultWatermarkTemplate">
-        <ContentControl Content="{Binding}" Foreground="Gray" />
+        <ContentControl Content="{Binding}" Foreground="Gray" Focusable="False" />
     </DataTemplate>
 
     <!-- =============================================================================== -->

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/DateTimeUpDown/Themes/Generic.xaml

@@ -3,7 +3,7 @@
                     xmlns:local="clr-namespace:Microsoft.Windows.Controls">
 
     <DataTemplate x:Key="DefaultWatermarkTemplate">
-        <ContentControl Content="{Binding}" Foreground="Gray" />
+        <ContentControl Content="{Binding}" Foreground="Gray" Focusable="False" />
     </DataTemplate>
     
     <!-- =============================================================================== -->

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/MaskedTextBox/Themes/Generic.xaml

@@ -7,7 +7,7 @@
     <coreConverters:InverseBoolConverter x:Key="InverseBoolConverter" />
 
     <DataTemplate x:Key="DefaultWatermarkTemplate">
-        <ContentControl Content="{Binding}" Foreground="Gray" />
+        <ContentControl Content="{Binding}" Foreground="Gray" Focusable="False" />
     </DataTemplate>
 
     <!-- =============================================================================== -->

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/NumericUpDown/Themes/Generic.xaml

@@ -6,7 +6,7 @@
     <coreConverters:InverseBoolConverter x:Key="InverseBoolConverter" />
 
     <DataTemplate x:Key="DefaultWatermarkTemplate">
-        <ContentControl Content="{Binding}" Foreground="Gray" />
+        <ContentControl Content="{Binding}" Foreground="Gray" Focusable="False" />
     </DataTemplate>
 
     <!-- =============================================================================== -->

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/WatermarkTextBox/Themes/Generic.xaml

@@ -24,7 +24,7 @@
     <SolidColorBrush x:Key="TextBox_DisabledBackground" Color="#F4F4F4" />
 
     <DataTemplate x:Key="DefaultWatermarkTemplate">
-        <ContentControl Content="{Binding}" Foreground="Gray" />
+        <ContentControl Content="{Binding}" Foreground="Gray" Focusable="False" />
     </DataTemplate>
 
     <Style TargetType="{x:Type local:WatermarkTextBox}">
@@ -61,7 +61,7 @@
                                           Content="{TemplateBinding Watermark}"
                                           ContentTemplate="{TemplateBinding WatermarkTemplate}"
                                           VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
-                                          HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                          HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"                                       
                                           IsHitTestVisible="False"
                                           Margin="{TemplateBinding Padding}"
                                           Visibility="Collapsed"/>