我需要帮助来在运行时更改我的 progressBar 样式（Windows Phone）。
有什么例子吗？这可能吗？
谢谢！
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XAML 上的样式：
<phone:PhoneApplicationPage.Resources>
<ControlTemplate x:Key="PhoneProgressBarSliderThumb" TargetType="Thumb">
<Rectangle Fill="{TemplateBinding Foreground}" Height="24" IsHitTestVisible="False" Width="24"/>
</ControlTemplate>
<Style x:Key="PhoneProgressBarSliderStyle" TargetType="Slider">
<Setter Property="Maximum" Value="3000"/>
<Setter Property="Minimum" Value="0"/>
<Setter Property="Value" Value="0"/>
<Setter Property="Opacity" Value="0"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Slider">
<Grid IsHitTestVisible="False">
<Grid x:Name="HorizontalTemplate">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<RepeatButton x:Name="HorizontalTrackLargeChangeDecreaseRepeatButton" Grid.Column="0" Height="0" Template="{x:Null}"/>
<Thumb x:Name="HorizontalThumb" Grid.Column="1" Foreground="{TemplateBinding Foreground}" Height="24" IsTabStop="False" Template="{StaticResource PhoneProgressBarSliderThumb}"/>
<RepeatButton x:Name="HorizontalTrackLargeChangeIncreaseRepeatButton" Grid.Column="2" Height="0" Template="{x:Null}"/>
</Grid>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ProgressBarStyle1" TargetType="ProgressBar">
<Setter Property="Height" Value="30"/>
<!--<Setter Property="Foreground" Value="{StaticResource PhoneAccentBrush}"/>
<Setter Property="Background" Value="{StaticResource PhoneAccentBrush}"/>-->
<Setter Property="Foreground" Value="YellowGreen"/>
<Setter Property="Background" Value="Blue"/>
<Setter Property="Maximum" Value="100"/>
<Setter Property="IsHitTestVisible" Value="False"/>
<Setter Property="Padding" Value="{StaticResource PhoneHorizontalMargin}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ProgressBar">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Determinate"/>
<VisualState x:Name="Indeterminate">
<Storyboard Duration="00:00:04.4" RepeatBehavior="Forever">
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="IndeterminateRoot">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="DeterminateRoot">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Value" Storyboard.TargetName="Slider1">
<EasingDoubleKeyFrame KeyTime="00:00:00.5" Value="1000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
<LinearDoubleKeyFrame KeyTime="00:00:02.0" Value="2000"/>
<EasingDoubleKeyFrame KeyTime="00:00:02.5" Value="3000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseIn" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.2" Storyboard.TargetProperty="Value" Storyboard.TargetName="Slider2">
<EasingDoubleKeyFrame KeyTime="00:00:00.5" Value="1000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
<LinearDoubleKeyFrame KeyTime="00:00:02.0" Value="2000"/>
<EasingDoubleKeyFrame KeyTime="00:00:02.5" Value="3000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseIn" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.4" Storyboard.TargetProperty="Value" Storyboard.TargetName="Slider3">
<EasingDoubleKeyFrame KeyTime="00:00:00.5" Value="1000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
<LinearDoubleKeyFrame KeyTime="00:00:02.0" Value="2000"/>
<EasingDoubleKeyFrame KeyTime="00:00:02.5" Value="3000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseIn" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.6" Storyboard.TargetProperty="Value" Storyboard.TargetName="Slider4">
<EasingDoubleKeyFrame KeyTime="00:00:00.5" Value="1000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
<LinearDoubleKeyFrame KeyTime="00:00:02.0" Value="2000"/>
<EasingDoubleKeyFrame KeyTime="00:00:02.5" Value="3000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseIn" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.8" Storyboard.TargetProperty="Value" Storyboard.TargetName="Slider5">
<EasingDoubleKeyFrame KeyTime="00:00:00.5" Value="1000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseOut" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
<LinearDoubleKeyFrame KeyTime="00:00:02.0" Value="2000"/>
<EasingDoubleKeyFrame KeyTime="00:00:02.5" Value="3000">
<EasingDoubleKeyFrame.EasingFunction>
<ExponentialEase EasingMode="EaseIn" Exponent="1"/>
</EasingDoubleKeyFrame.EasingFunction>
</EasingDoubleKeyFrame>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Slider1">
<DiscreteDoubleKeyFrame KeyTime="0" Value="1"/>
<DiscreteDoubleKeyFrame KeyTime="00:00:02.5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.2" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Slider2">
<DiscreteDoubleKeyFrame KeyTime="0" Value="1"/>
<DiscreteDoubleKeyFrame KeyTime="00:00:02.5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.4" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Slider3">
<DiscreteDoubleKeyFrame KeyTime="0" Value="1"/>
<DiscreteDoubleKeyFrame KeyTime="00:00:02.5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.6" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Slider4">
<DiscreteDoubleKeyFrame KeyTime="0" Value="1"/>
<DiscreteDoubleKeyFrame KeyTime="00:00:02.5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00.8" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Slider5">
<DiscreteDoubleKeyFrame KeyTime="0" Value="1"/>
<DiscreteDoubleKeyFrame KeyTime="00:00:02.5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="DeterminateRoot" Margin="{TemplateBinding Padding}" Visibility="Visible">
<Rectangle x:Name="ProgressBarTrack" Fill="{TemplateBinding Background}" Height="24" Opacity="0.1"/>
<Rectangle x:Name="ProgressBarIndicator" Fill="{TemplateBinding Foreground}" HorizontalAlignment="Left" Height="24"/>
</Grid>
<Border x:Name="IndeterminateRoot" Margin="{TemplateBinding Padding}" Visibility="Collapsed">
<Grid>
<Slider x:Name="Slider1" Foreground="{TemplateBinding Foreground}" Style="{StaticResource PhoneProgressBarSliderStyle}"/>
<Slider x:Name="Slider2" Foreground="{TemplateBinding Foreground}" Style="{StaticResource PhoneProgressBarSliderStyle}"/>
<Slider x:Name="Slider3" Foreground="{TemplateBinding Foreground}" Style="{StaticResource PhoneProgressBarSliderStyle}"/>
<Slider x:Name="Slider4" Foreground="{TemplateBinding Foreground}" Style="{StaticResource PhoneProgressBarSliderStyle}"/>
<Slider x:Name="Slider5" Foreground="{TemplateBinding Foreground}" Style="{StaticResource PhoneProgressBarSliderStyle}"/>
</Grid>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
我的.cs：
progBar.Style = (Style)this.Resources["ProgressBarStyle1"];
网上找到的款式<<<<<
于 2012-09-11T14:12:09.820 回答