ProgressBar 样式和模板

本主题介绍 ProgressBar 控件的样式和模板。 可以修改默认 ControlTemplate 以赋予控件独特的外观。 有关详细信息，请参阅为控件创建模板。

ProgressBar 部件

下表列出了 ProgressBar 控件的已命名部件。

组成部分	类型	描述
PART_Indicator	FrameworkElement	指示进度的对象。
PART_Track	FrameworkElement	定义进度指示器路径的对象。
PART_GlowRect	FrameworkElement	修饰进度栏的对象。

ProgressBar 状态

下表列出了 ProgressBar 控件的可视状态。

VisualState 名称	VisualStateGroup 名称	说明
确定	CommonStates	ProgressBar 基于 Value 属性报告进度。
不确定	CommonStates	ProgressBar 使用重复模式报告一般进度。
有效	ValidationStates	该控件使用 Validation 类，Validation.HasError 附加属性为 false。
InvalidFocused	ValidationStates	如果控件具有焦点，则 Validation.HasError 附加属性为 true。
InvalidUnfocused	ValidationStates	Validation.HasError 附加属性是让控件不具有焦点的 true。

ProgressBar ControlTemplate 示例

以下示例演示如何定义 ProgressBar 控件的 ControlTemplate。

<Style x:Key="{x:Type ProgressBar}"
       TargetType="{x:Type ProgressBar}">
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type ProgressBar}">
        <Grid MinHeight="14"
              MinWidth="200"
              Background="{TemplateBinding Background}">
          <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
              <VisualState x:Name="Determinate" />
              <VisualState x:Name="Indeterminate">
                <Storyboard>
                  <ObjectAnimationUsingKeyFrames Duration="00:00:00"
                                                 Storyboard.TargetName="PART_Indicator"
                                                 Storyboard.TargetProperty="Background">
                    <DiscreteObjectKeyFrame KeyTime="00:00:00">
                      <DiscreteObjectKeyFrame.Value>
                        <SolidColorBrush>Transparent</SolidColorBrush>
                      </DiscreteObjectKeyFrame.Value>
                    </DiscreteObjectKeyFrame>
                  </ObjectAnimationUsingKeyFrames>

                </Storyboard>
              </VisualState>
            </VisualStateGroup>
          </VisualStateManager.VisualStateGroups>
          <Border x:Name="PART_Track"
                  CornerRadius="2"
                  BorderThickness="1">
            <Border.BorderBrush>
              <SolidColorBrush Color="{DynamicResource BorderMediumColor}" />
            </Border.BorderBrush>
          </Border>
          <Border x:Name="PART_Indicator"
                  CornerRadius="2"
                  BorderThickness="1"
                  HorizontalAlignment="Left"
                  Background="{TemplateBinding Foreground}"
                  Margin="0,-1,0,1">
            <Border.BorderBrush>
              <LinearGradientBrush StartPoint="0,0"
                                   EndPoint="0,1">
                <GradientBrush.GradientStops>
                  <GradientStopCollection>
                    <GradientStop Color="{DynamicResource BorderLightColor}"
                                  Offset="0.0" />
                    <GradientStop Color="{DynamicResource BorderMediumColor}"
                                  Offset="1.0" />
                  </GradientStopCollection>
                </GradientBrush.GradientStops>
              </LinearGradientBrush>

            </Border.BorderBrush>
            <Grid ClipToBounds="True"
                  x:Name="Animation">
              <Rectangle x:Name="PART_GlowRect"
                         Width="100"
                         HorizontalAlignment="Left"
                         Fill="{DynamicResource ProgressBarIndicatorAnimatedFill}"
                         Margin="-100,0,0,0" />
            </Grid>
          </Border>
        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
  <Setter Property="Background">
    <Setter.Value>
      <LinearGradientBrush EndPoint="0,1"
                           StartPoint="0,0">
        <GradientStop Color="{DynamicResource ControlLightColor}"
                      Offset="0" />
        <GradientStop Color="{DynamicResource ControlMediumColor}"
                      Offset="1" />
      </LinearGradientBrush>
    </Setter.Value>
  </Setter>
  <Setter Property="Foreground">
    <Setter.Value>
      <LinearGradientBrush EndPoint="0.5,1"
                           StartPoint="0.5,0">
        <GradientStop Color="{DynamicResource ControlMediumColor}"
                      Offset="0" />
        <GradientStop Color="{DynamicResource ControlDarkColor}"
                      Offset="1" />
      </LinearGradientBrush>
    </Setter.Value>
  </Setter>
</Style>

上一示例使用了一个或多个以下资源。

<!--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>

有关完整示例，请参阅使用 ControlTemplates 设置样式示例。

另请参阅

• Style
• ControlTemplate
• 控件样式和模板
• 控件自定义
• 样式设置和模板化
• 创建控件模板