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ScrollViewer Styles and Templates

This topic describes the styles and templates for the ScrollViewer control. You can modify the default ControlTemplate to give the control a unique appearance. For more information, see Customizing the Appearance of an Existing Control by Creating a ControlTemplate.

The following table lists the named parts for the ScrollViewer control.

Part

Type

Description

PART_ScrollContentPresenter

ScrollContentPresenter

The placeholder for content in the ScrollViewer.

PART_HorizontalScrollBar

ScrollBar

The ScrollBar used to scroll the content horizontally.

PART_VerticalScrollBar

ScrollBar

The ScrollBar used to scroll the content vertically.

The following table lists the visual states for the ScrollViewer control.

VisualState Name

VisualStateGroup Name

Description

Valid

ValidationStates

The control uses the Validation class and the Validation.HasError attached property is false.

InvalidFocused

ValidationStates

The Validation.HasError attached property is true has the control has focus.

InvalidUnfocused

ValidationStates

The Validation.HasError attached property is true has the control does not have focus.

The following example shows how to define a ControlTemplate for the ScrollViewer control.

<Style x:Key="LeftScrollViewer"
       TargetType="{x:Type ScrollViewer}">
  <Setter Property="OverridesDefaultStyle"
          Value="True" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type ScrollViewer}">
        <Grid>
          <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition />
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
          </Grid.RowDefinitions>
          <Border Grid.Column="1"
                  BorderThickness="0,1,1,1">
            <Border.BorderBrush>
              <SolidColorBrush Color="{DynamicResource BorderMediumColor}" />
            </Border.BorderBrush>
            <ScrollContentPresenter />
          </Border>
          <ScrollBar x:Name="PART_VerticalScrollBar"
                     Value="{TemplateBinding VerticalOffset}"
                     Maximum="{TemplateBinding ScrollableHeight}"
                     ViewportSize="{TemplateBinding ViewportHeight}"
                     Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>
          <ScrollBar x:Name="PART_HorizontalScrollBar"
                     Orientation="Horizontal"
                     Grid.Row="1"
                     Grid.Column="1"
                     Value="{TemplateBinding HorizontalOffset}"
                     Maximum="{TemplateBinding ScrollableWidth}"
                     ViewportSize="{TemplateBinding ViewportWidth}"
                     Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>

        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

The preceding example uses one or more of the following resources.

<!--Control colors.-->
<Color x:Key="WindowColor">#FFE8EDF9</Color>
<Color x:Key="ContentAreaColorLight">#FFC5CBF9</Color>
<Color x:Key="ContentAreaColorDark">#FF7381F9</Color>

<Color x:Key="DisabledControlLightColor">#FFE8EDF9</Color>
<Color x:Key="DisabledControlDarkColor">#FFC5CBF9</Color>
<Color x:Key="DisabledForegroundColor">#FF888888</Color>

<Color x:Key="SelectedBackgroundColor">#FFC5CBF9</Color>
<Color x:Key="SelectedUnfocusedColor">#FFDDDDDD</Color>

<Color x:Key="ControlLightColor">White</Color>
<Color x:Key="ControlMediumColor">#FF7381F9</Color>
<Color x:Key="ControlDarkColor">#FF211AA9</Color>

<Color x:Key="ControlMouseOverColor">#FF3843C4</Color>
<Color x:Key="ControlPressedColor">#FF211AA9</Color>


<Color x:Key="GlyphColor">#FF444444</Color>
<Color x:Key="GlyphMouseOver">sc#1, 0.004391443, 0.002428215, 0.242281124</Color>

<!--Border colors-->
<Color x:Key="BorderLightColor">#FFCCCCCC</Color>
<Color x:Key="BorderMediumColor">#FF888888</Color>
<Color x:Key="BorderDarkColor">#FF444444</Color>

<Color x:Key="PressedBorderLightColor">#FF888888</Color>
<Color x:Key="PressedBorderDarkColor">#FF444444</Color>

<Color x:Key="DisabledBorderLightColor">#FFAAAAAA</Color>
<Color x:Key="DisabledBorderDarkColor">#FF888888</Color>

<Color x:Key="DefaultBorderBrushDarkColor">Black</Color>

<!--Control-specific resources.-->
<Color x:Key="HeaderTopColor">#FFC5CBF9</Color>
<Color x:Key="DatagridCurrentCellBorderColor">Black</Color>
<Color x:Key="SliderTrackDarkColor">#FFC5CBF9</Color>

<Color x:Key="NavButtonFrameColor">#FF3843C4</Color>

<LinearGradientBrush x:Key="MenuPopupBrush"
                     EndPoint="0.5,1"
                     StartPoint="0.5,0">
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="0" />
  <GradientStop Color="{DynamicResource ControlMediumColor}"
                Offset="0.5" />
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="1" />
</LinearGradientBrush>

<LinearGradientBrush x:Key="ProgressBarIndicatorAnimatedFill"
                     StartPoint="0,0"
                     EndPoint="1,0">
  <LinearGradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#000000FF"
                    Offset="0" />
      <GradientStop Color="#600000FF"
                    Offset="0.4" />
      <GradientStop Color="#600000FF"
                    Offset="0.6" />
      <GradientStop Color="#000000FF"
                    Offset="1" />
    </GradientStopCollection>
  </LinearGradientBrush.GradientStops>
</LinearGradientBrush>

For the complete sample, see Styling with ControlTemplates Sample.

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