我尝试使用WPF中Silverlight工具包TwilightBlue主题的ProgressBar样式。它不会抛出任何错误，但进度条不会填充。风格如下。
<!-- ProgressBar -->
<Style TargetType="ProgressBar">
<Setter Property="Foreground" Value="{StaticResource TextBrush}" />
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFB4B4B4" />
<GradientStop Color="#FFFFFFFF" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="BorderThickness" Value="0.75,0.75,1.5,1.5" />
<Setter Property="Maximum" Value="100" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="BorderBrush" Value="{StaticResource PrimaryBrush}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ProgressBar">
<Grid x:Name="Root">
<Grid.RowDefinitions>
<RowDefinition Height="0.5*" />
<RowDefinition Height="0.5*" />
</Grid.RowDefinitions>
<vsm:VisualStateManager.VisualStateGroups>
<vsm:VisualStateGroup x:Name="CommonStates">
<vsm:VisualState x:Name="Determinate" />
<vsm:VisualState x:Name="Indeterminate">
<Storyboard RepeatBehavior="Forever">
<ObjectAnimationUsingKeyFrames Duration="00:00:00" Storyboard.TargetName="IndeterminateRoot" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="0" Value="Visible" />
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="00:00:00" Storyboard.TargetName="DeterminateRoot" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed" />
</ObjectAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="IndeterminateGradientFill" Storyboard.TargetProperty="(Shape.Fill).(LinearGradientBrush.Transform).(TransformGroup.Children)[0].X">
<SplineDoubleKeyFrame KeyTime="0" Value="0" />
<SplineDoubleKeyFrame KeyTime="00:00:.5" Value="20" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
</vsm:VisualStateGroup>
</vsm:VisualStateManager.VisualStateGroups>
<Border CornerRadius="4" x:Name="White" BorderBrush="#FFFFFFFF" BorderThickness="1.2" Grid.RowSpan="2">
<Border.Background>
<RadialGradientBrush>
<RadialGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="1.35" ScaleY="1.35" />
</TransformGroup>
</RadialGradientBrush.RelativeTransform>
<GradientStop Color="#FFFFFFFF" Offset="0" />
<GradientStop Color="#FFFFFFFF" Offset="1" />
</RadialGradientBrush>
</Border.Background>
</Border>
<Border x:Name="ProgressBarTrack" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1.2,1.2,1.2,1.2" CornerRadius="4,4,4,4" Grid.RowSpan="2" Opacity="0.65" />
<Grid x:Name="ProgressBarRootGrid" Grid.RowSpan="2">
<Rectangle Margin="{TemplateBinding BorderThickness}" x:Name="ProgressBarRootGradient" Canvas.ZIndex="1" Stroke="#FFFFFFFF" StrokeThickness="1" RadiusX="4" RadiusY="4" Opacity="0.65">
<Rectangle.Fill>
<LinearGradientBrush EndPoint="0.7,1.263" StartPoint="0.699999988079071,0">
<GradientStop Color="{StaticResource PrimaryColor}" Offset="0.312" />
<GradientStop Color="{StaticResource SecondaryColor}" Offset="1" />
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
<Grid x:Name="IndeterminateRoot" Visibility="Collapsed">
<Rectangle Margin="{TemplateBinding BorderThickness}" x:Name="IndeterminateSolidFill" Opacity="1" RenderTransformOrigin="0.5,0.5" Fill="{TemplateBinding Foreground}" Stroke="#FF448DCA" StrokeThickness="0" RadiusX="4" RadiusY="4" />
<Rectangle Margin="{TemplateBinding BorderThickness}" x:Name="IndeterminateGradientFill" Opacity="0.7" StrokeThickness="1" RadiusX="4" RadiusY="4">
<Rectangle.Fill>
<LinearGradientBrush MappingMode="Absolute" SpreadMethod="Repeat" EndPoint="0,1" StartPoint="20,1">
<LinearGradientBrush.Transform>
<TransformGroup>
<TranslateTransform X="0" />
<SkewTransform AngleX="-30" />
</TransformGroup>
</LinearGradientBrush.Transform>
<GradientStop Color="#FFFFFFFF" Offset="0" />
<GradientStop Color="#00FFFFFF" Offset=".25" />
<GradientStop Color="#FFFFFFFF" Offset="0.85" />
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
</Grid>
<Grid Margin="1" x:Name="DeterminateRoot">
<Rectangle HorizontalAlignment="Left" Margin="{TemplateBinding BorderThickness}" x:Name="ProgressBarIndicator" StrokeThickness="0.5" RadiusX="4" RadiusY="4" Fill="{StaticResource PrimaryBrush}" />
</Grid>
</Grid>
<Border BorderBrush="#7FFFFFFF" BorderThickness="1" CornerRadius="3.5" x:Name="InnerBorder" Margin="1" Grid.RowSpan="2" />
<Border CornerRadius="3.5" x:Name="Shadow" Margin="2" Opacity="0.2" Grid.RowSpan="2">
<Border.OpacityMask>
<RadialGradientBrush>
<RadialGradientBrush.RelativeTransform>
<TransformGroup>
<TranslateTransform X="0" Y="-0.5" />
</TransformGroup>
</RadialGradientBrush.RelativeTransform>
<GradientStop Color="#00FFFFFF" Offset="0.3" />
<GradientStop Color="#FFFFFFFF" Offset="1" />
</RadialGradientBrush>
</Border.OpacityMask>
<Border.Background>
<RadialGradientBrush>
<RadialGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="1.75" ScaleY="2.25" />
<TranslateTransform Y="0.65" />
</TransformGroup>
</RadialGradientBrush.RelativeTransform>
<GradientStop Color="#00000000" Offset="0.55" />
<GradientStop Color="#4C000000" Offset="1" />
</RadialGradientBrush>
</Border.Background>
</Border>
<Border Margin="1" CornerRadius="4,4,40,40" x:Name="Highlight" Opacity="0.8" RenderTransformOrigin="0.5,1">
<Border.Background>
<RadialGradientBrush>
<RadialGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="1.25" ScaleY="2" />
<TranslateTransform Y="-0.6" />
</TransformGroup>
</RadialGradientBrush.RelativeTransform>
<GradientStop Color="#BFFFFFFF" Offset="0" />
<GradientStop Color="#4CFFFFFF" Offset="1" />
</RadialGradientBrush>
</Border.Background>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
WPF和Silverlight进度条是否有所不同？为什么这不起作用？
答案 0 :(得分：1)
我在这里看到两个问题：
<强> 1。您可能无法定义前景的画笔。在调试器下运行此命令时，请在“输出”窗口中查找绑定错误。
尝试更改
<Setter Property="Foreground" Value="{StaticResource TextBrush}" />
到
<Setter Property="Foreground" Value="Black" />
如果没有显示其他部分，您可能还有其他未定义的画笔。
<强> 2。您的姓名可能与WPF中预期的PART名称不匹配。这是WPF的自定义进度条样式，可能是一个更好的起点：
<Style x:Key="ProgressBar-sterling" TargetType="{x:Type ProgressBar}">
<Setter Property="Foreground" Value="{x:Null}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ProgressBar}">
<Border Background="#00E6E6E6" BorderBrush="#FFA6A6A6" BorderThickness="1" SnapsToDevicePixels="True" >
<DockPanel x:Name="PART_Track" LastChildFill="false">
<Border x:Name="PART_Indicator" HorizontalAlignment="Left" SnapsToDevicePixels="True">
<Grid Margin="1">
<Rectangle Fill="#FF737373" SnapsToDevicePixels="True" />
<Rectangle x:Name="Overlay" IsHitTestVisible="False" Opacity="0.4" SnapsToDevicePixels="True">
<Rectangle.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Transparent" Offset="1"/>
<GradientStop Color="#FFFFFFFF" Offset="0"/>
<GradientStop Color="#FFFFFFFF" Offset="0.124"/>
<GradientStop Color="Transparent" Offset="0.72"/>
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
</Grid>
</Border>
</DockPanel>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
我会做一件事来创建一个示例Silverlight应用程序，并且在尝试将它们移植到WPF之前，您导入的任何SL样式都在SL中工作。此外，Expression Blend还提供了Simple和SketchFlow样式中的示例样式，并且可以更轻松地从现有控件创建自定义样式。