diff --git a/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml b/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml
index d43b2933..90d37234 100644
--- a/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml
+++ b/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml
@@ -20,9 +20,9 @@
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="ToggleButton">
-                    <Border x:Name="templateRoot" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
-                        <Border Margin="0,0,6,0" x:Name="splitBorder" BorderBrush="Transparent" BorderThickness="1" HorizontalAlignment="Right" SnapsToDevicePixels="true" Width="{StaticResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}">
-                            <Path x:Name="arrow" Data="{StaticResource DownGeometry}" Stretch="Uniform" Fill="{TemplateBinding BorderBrush}" HorizontalAlignment="Center" Margin="0" VerticalAlignment="Center" RenderTransformOrigin="0.5,0.5"/>
+                    <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
+                        <Border Margin="0,0,6,0" BorderThickness="1" BorderBrush="Transparent" HorizontalAlignment="Right" SnapsToDevicePixels="true" Width="{StaticResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}">
+                            <Path x:Name="arrow" Data="{StaticResource DownGeometry}" Fill="{TemplateBinding BorderBrush}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                         </Border>
                     </Border>
                     <ControlTemplate.Triggers>
@@ -53,9 +53,9 @@
                             <ColumnDefinition/>
                             <ColumnDefinition Width="30"/>
                         </Grid.ColumnDefinitions>
-                        <Border x:Name="templateRoot" Grid.ColumnSpan="2" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true"/>
-                        <Path Grid.Column="1" x:Name="arrow" Data="{StaticResource DownGeometry}" Stretch="Uniform" Fill="{TemplateBinding BorderBrush}" HorizontalAlignment="Center" Margin="7" VerticalAlignment="Center" RenderTransformOrigin="0.5,0.5"/>
-                        <Border Margin="0,1" Grid.Column="0" Visibility="{Binding Text,RelativeSource={RelativeSource AncestorType=ComboBox},Converter={StaticResource String2VisibilityReConverter}}">
+                        <Border Grid.ColumnSpan="2" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true"/>
+                        <Path Grid.Column="1" x:Name="arrow" Data="{StaticResource DownGeometry}" Stretch="Uniform" Fill="{TemplateBinding BorderBrush}" HorizontalAlignment="Center" Margin="7" VerticalAlignment="Center"/>
+                        <Border Margin="1" Grid.Column="0" Visibility="{Binding Text,RelativeSource={RelativeSource AncestorType=ComboBox},Converter={StaticResource String2VisibilityReConverter}}">
                             <ContentPresenter Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                         </Border>
                     </Grid>
@@ -82,11 +82,11 @@
             <Popup x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -145,11 +145,11 @@
             <Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -206,11 +206,11 @@
             <Popup Grid.Column="1" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -281,17 +281,17 @@
             <Popup x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
             </Popup>
             <ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
-            <Border Grid.Column="0" x:Name="border" Margin="-1,1">
+            <Border Grid.Column="0" Margin="-1,1">
                 <TextBox x:Name="PART_EditableTextBox" Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxEditableTextBox}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
             </Border>
         </Grid>
@@ -347,11 +347,11 @@
             <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -411,11 +411,11 @@
             <Popup Grid.Column="1" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -583,11 +583,11 @@
             <Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -684,11 +684,11 @@
             <Popup Grid.Column="1" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -788,11 +788,11 @@
             <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
@@ -910,11 +910,11 @@
             <Popup Grid.Column="1" x:Name="PART_Popup" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
                 <Border CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MaxHeight="{TemplateBinding MaxDropDownHeight}" MinWidth="{Binding ActualWidth, ElementName=templateRoot}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Background="{DynamicResource RegionBrush}">
                     <ScrollViewer Margin="0,4" x:Name="DropDownScrollViewer">
-                        <controls:SimplePanel x:Name="grid" RenderOptions.ClearTypeHint="Enabled">
-                            <Canvas x:Name="canvas" HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
+                        <controls:SimplePanel RenderOptions.ClearTypeHint="Enabled">
+                            <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                 <Rectangle x:Name="opaqueRect" Fill="{Binding Background, ElementName=dropDownBorder}" Height="{Binding ActualHeight, ElementName=dropDownBorder}" Width="{Binding ActualWidth, ElementName=dropDownBorder}"/>
                             </Canvas>
-                            <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                            <ItemsPresenter KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                         </controls:SimplePanel>
                     </ScrollViewer>
                 </Border>
diff --git a/HandyControl/Themes/Styles/Base/TextBlockBaseStyle.xaml b/HandyControl/Themes/Styles/Base/TextBlockBaseStyle.xaml
index d6699f7c..1019597d 100644
--- a/HandyControl/Themes/Styles/Base/TextBlockBaseStyle.xaml
+++ b/HandyControl/Themes/Styles/Base/TextBlockBaseStyle.xaml
@@ -9,7 +9,6 @@
         <Setter Property="VerticalAlignment" Value="Center"/>
         <Setter Property="HorizontalAlignment" Value="Center"/>
         <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}"/>
-        <Setter Property="FontSize" Value="{StaticResource TextFontSize}"/>
     </Style>
 
     <Style x:Key="TextBlockBoldBaseStyle" BasedOn="{StaticResource TextBlockBaseStyle}" TargetType="TextBlock">
diff --git a/HandyControl/Themes/Styles/Base/TextBoxBaseStyle.xaml b/HandyControl/Themes/Styles/Base/TextBoxBaseStyle.xaml
index c3b5ce3e..f0259a81 100644
--- a/HandyControl/Themes/Styles/Base/TextBoxBaseStyle.xaml
+++ b/HandyControl/Themes/Styles/Base/TextBoxBaseStyle.xaml
@@ -80,7 +80,7 @@
                 <ContentPresenter TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(controls:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(controls:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
             </StackPanel>
             <Border x:Name="border" Grid.Row="1" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True"/>
-            <TextBlock x:Name="Placeholder" Padding="1" FontSize="{TemplateBinding FontSize}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Grid.Row="1" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
+            <TextBlock x:Name="Placeholder" Padding="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Grid.Row="1" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
             <ScrollViewer Padding="{TemplateBinding Padding}" Margin="-1,1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" Grid.Row="1" x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
         </Grid>
         <ControlTemplate.Triggers>
@@ -109,7 +109,7 @@
                 <ContentPresenter TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(controls:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(controls:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
             </StackPanel>
             <Border x:Name="border" Grid.Column="1" CornerRadius="{Binding Path=(controls:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True"/>
-            <TextBlock x:Name="Placeholder" Padding="1" FontSize="{TemplateBinding FontSize}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Grid.Column="1" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
+            <TextBlock x:Name="Placeholder" Padding="1" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Grid.Column="1" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
             <ScrollViewer Padding="{TemplateBinding Padding}" Margin="-1,1" Grid.Column="1" x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
         </Grid>
         <ControlTemplate.Triggers>
@@ -129,7 +129,7 @@
 
     <Style x:Key="TextBoxExtendBaseStyle" BasedOn="{StaticResource TextBoxBaseStyle}" TargetType="TextBox">
         <Setter Property="controls:InfoElement.Symbol" Value="●"/>
-        <Setter Property="controls:InfoElement.ContentHeight" Value="30.0"/>
+        <Setter Property="controls:InfoElement.ContentHeight" Value="{StaticResource DefaultControlHeight}"/>
         <Setter Property="Height" Value="{x:Static system:Double.NaN}"/>
         <Setter Property="Template" Value="{StaticResource TextBoxExtendTopTemplate}"/>
         <Style.Triggers>
@@ -165,7 +165,7 @@
                         <ColumnDefinition Width="*"/>
                         <ColumnDefinition Width="Auto"/>
                     </Grid.ColumnDefinitions>
-                    <TextBlock FontSize="{TemplateBinding FontSize}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
+                    <TextBlock VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
                     <ScrollViewer Margin="-2,0" Grid.Column="0" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
                     <Button Command="interactivity:ControlCommands.Clear" Margin="0,0,7,0" Visibility="Collapsed" Name="ButtonClear" Width="16" Grid.Column="1" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{Binding BorderBrush,ElementName=templateRoot}"/>
                 </Grid>
@@ -225,7 +225,7 @@
                         <ColumnDefinition Width="*"/>
                         <ColumnDefinition Width="Auto"/>
                     </Grid.ColumnDefinitions>
-                    <TextBlock FontSize="{TemplateBinding FontSize}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
+                    <TextBlock VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
                     <ScrollViewer Grid.Column="0" Margin="-2,0" Padding="{TemplateBinding Padding}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
                     <Button Command="interactivity:ControlCommands.Clear" Margin="0,0,7,0" Visibility="Collapsed" Name="ButtonClear" Width="16" Grid.Column="1" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{Binding BorderBrush,ElementName=templateRoot}"/>
                 </Grid>