一、前言
滾動條一般用于加載進度，我們在看視頻的時候或者在瀏覽網頁的時候經常能看到加載進度的頁面。在程序開發中，默認的進度加載樣式可能跟程序風格不太一樣，或者加載進度的時候需要更改一下加載的樣式。這個時候就需要通過修改ProgressBar的樣式來實現。
二、ProgressBar的基本樣式
ProgressBar的基本樣式很簡單：
<Style TargetType="{x:Type ProgressBar}"> <Setter Property="FocusVisualStyle" Value="{x:Null}"/> <Setter Property="SnapsToDevicePixels" Value="True"/> <Setter Property="Height" Value="15"/> <Setter Property="Background" Value="#6fae5f"/> <Setter Property="FontSize" Value="10"/> <Setter Property="Padding" Value="5,0"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ProgressBar}"> <Grid Background="#00000000"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="CommonStates"> <VisualState x:Name="Determinate"/> <VisualState x:Name="Indeterminate"> <Storyboard RepeatBehavior="Forever"> <PointAnimationUsingKeyFrames Storyboard.TargetName="Animation" Storyboard.TargetProperty="(UIElement.RenderTransformOrigin)"> <EasingPointKeyFrame KeyTime="0:0:0" Value="0.5,0.5"/> <EasingPointKeyFrame KeyTime="0:0:1.5" Value="1.95,0.5"/> <EasingPointKeyFrame KeyTime="0:0:3" Value="0.5,0.5"/> </PointAnimationUsingKeyFrames> </Storyboard> </VisualState> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <Grid Height="{TemplateBinding Height}"> <Border Background="#000000" CornerRadius="7.5" Opacity="0.05"/> <Border BorderBrush="#000000" BorderThickness="1" CornerRadius="7.5" Opacity="0.1"/> <Grid Margin="{TemplateBinding BorderThickness}"> <Border x:Name="PART_Track"/> <Grid x:Name="PART_Indicator" ClipToBounds="True" HorizontalAlignment="Left" > <Grid.ColumnDefinitions> <ColumnDefinition x:Name="width1"/> <ColumnDefinition x:Name="width2" Width="0"/> </Grid.ColumnDefinitions> <Grid x:Name="Animation" RenderTransformOrigin="0.5,0.5"> <Grid.RenderTransform> <TransformGroup> <ScaleTransform ScaleY="-1" ScaleX="1"/> <SkewTransform AngleY="0" AngleX="0"/> <RotateTransform Angle="180"/> <TranslateTransform/> </TransformGroup> </Grid.RenderTransform> <Border Background="{TemplateBinding Background}" CornerRadius="7.5"> <Viewbox HorizontalAlignment="Left" StretchDirection="DownOnly" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="True"> <TextBlock Foreground="#ffffff" SnapsToDevicePixels="True" FontSize="{TemplateBinding FontSize}" VerticalAlignment="Center" Text="{Binding RelativeSource={RelativeSource TemplatedParent},Path=Value,StringFormat={}{0}%}" RenderTransformOrigin="0.5,0.5"> <TextBlock.RenderTransform> <TransformGroup> <ScaleTransform ScaleY="1" ScaleX="-1"/> <SkewTransform AngleY="0" AngleX="0"/> <RotateTransform Angle="0"/> <TranslateTransform/> </TransformGroup> </TextBlock.RenderTransform> </TextBlock> </Viewbox> </Border> <Border BorderBrush="#000000" BorderThickness="1" CornerRadius="7.5" Opacity="0.1"/> </Grid> </Grid> </Grid> </Grid> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsEnabled" Value="False"> <Setter Property="Background" Value="#c5c5c5"/> </Trigger> <Trigger Property="IsIndeterminate" Value="true"> <Setter TargetName="width1" Property="Width" Value="0.25*"/> <Setter TargetName="width2" Property="Width" Value="0.725*"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style>引用示例：
<ProgressBar Height="15" Width="150" Value="40" Margin="10"/>
顯示效果：
所有代碼已經上傳到github：https://github.com/cmfGit/WpfDemo.git
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作具有一定的參考學習價值，謝謝大家對武林網的支持。
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