Question

到目前为止，我一直在搜索这个问题，找不到任何答案对我没有帮助。我对wpf真的很陌生，我不知道如何实现这一目标。我需要让进度条在达到某个值或百分比时改变它的颜色，或者其他什么。

提前致谢

这是我的代码 XAML

<Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:WpfApplication2"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <local:MainWindow  x:Key="ProgressForegroundConverter"/>
</Window.Resources>
<StackPanel>
    <ProgressBar Margin="20"
             Value="{Binding ElementName=progress, Path=Value}"
              Foreground="{Binding RelativeSource={RelativeSource Mode=Self}, Path=Value, Converter={StaticResource ProgressForegroundConverter}}" Height="38"/>
       <Slider Name="progress" Margin="10" Minimum="0" Maximum="100"/>
</StackPanel>

app XAML

<Application x:Class="Application"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml">
<Application.Resources>

</Application.Resources>

vb.net

Class MainWindow

Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfoIetfLanguageTagConverter)

    Dim progress As Double = value / 100

    Foreground = Brushes.Red

        If progress = 100D Then

            Foreground = Brushes.Green

        ElseIf progress >= 95D Then

            Foreground = Brushes.Yellow
        End If

        Return Foreground
    End Function

Public Function ConvertBack(ByVal value As Object, targetType As Type, parameter As Object, culture As CultureInfoIetfLanguageTagConverter)

    Throw New NotImplementedException()
  End Function
End Class

WPF vb.net ProgressBar，它根据特定值更改颜色

0 个答案: