WPF ProgressBar 样式
Posted AlvinLiang
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希望写个ProgressBar的样式,在progress value不同的时候显示不同的颜色的progress bar
1.写转换器
public class ProgressBarValueConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { double v = (double)value; string imageUri = "../Images/progress bar_1.png"; if (v > 80) { imageUri = "../Images/progress bar_3.png"; } else if (v > 50) { imageUri = "../Images/progress bar_2.png"; } BitmapImage img = new BitmapImage(new Uri(imageUri, UriKind.Relative)); return img; } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } }
2.创建样式
<c:ProgressBarValueConverter x:Key="pbConverter"/> <Style x:Key="ProgressBarStyle" TargetType="{x:Type ProgressBar}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate> <Grid> <Image Name="PART_Track" Source="../Images/progress bar.png" HorizontalAlignment="Left" Stretch="Fill"/> <Image Name="PART_Indicator" Source="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Value, Converter={StaticResource pbConverter}}" HorizontalAlignment="Left" Stretch="Fill"/> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>
3.设置progress bar的style
progress bar.png:
progress bar_1.png:
progress bar_2.png:
progress bar_3.png:
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如果仅仅是希望创建一个扁平化的progress bar,那么连转换器都可以不用写
<Style x:Key="FlatProgressBar" TargetType="{x:Type ProgressBar}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate> <Grid> <Image Name="PART_Track" Source="../Images/Flat Progress Bar.png" HorizontalAlignment="Left" Stretch="Fill"/> <Image Name="PART_Indicator" Source="../Images/Flat Progress Bar_1.png" HorizontalAlignment="Left" Stretch="Fill"/> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>
Flat Progress Bar.png:
Flat Progress Bar_1.png:
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