Question

I’m wanting a progress bar to change it’s color depending on the range the current value is currently in. I was wondering if there was an attribute on the progress bar that I could bind a view model property to to change the color. Does such an attribute exist on the WPF progressbar?

Answer 1

Just change the foreground color to the color you like:

<ProgressBar Foreground="{Binding PBarColorBrush}" Value="{Binding PBarValue}" />

Edit (answering your comment): Yes, you need a Brush property (Almost all color properties are Brushed in WPF)

But don’t worry it’s very simple:

Public Sub DoWork()
    For i = 1 To 100
        If i < 50 Then
            PBarColorBrush = Brushes.Blue
        ElseIf i < 80 Then
            PBarColorBrush = Brushes.Green
        Else
            PBarColorBrush = Brushes.Red
        End If
    Next

End Sub

And the property:

Private _PBarColorBrush As Brush
Public Property PBarColorBrush() As Brush
    Get
        Return _PBarColorBrush
    End Get
    Set(ByVal value As Brush)
        _PBarColorBrush = value
        OnPropertyChanged("PBarColorBrush")
    End Set
End Property