<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:src="clr-namespace:MyNameSpace.DecimalScrollBar" Title="Decimal ScrollBar"> <Window.Resources> <src:DoubleToDecimalConverter x:Key="conv" /> </Window.Resources> <StackPanel> <ScrollBar Name="scroll" Orientation="Horizontal" Margin="24" Maximum="100" LargeChange="10" SmallChange="1" /> <Label HorizontalAlignment="Center" Content="{Binding ElementName=scroll, Path=Value, Converter={StaticResource conv}, ConverterParameter=2}" /> </StackPanel> </Window> //File:Window.xaml.cs using System; using System.Globalization; using System.Windows; using System.Windows.Data; namespace MyNameSpace.DecimalScrollBar { [ValueConversion(typeof(double), typeof(decimal))] public class DoubleToDecimalConverter : IValueConverter { public object Convert(object value, Type typeTarget,object param, CultureInfo culture) { decimal num = new Decimal((double)value); if (param != null) num = Decimal.Round(num, Int32.Parse(param as string)); return num; } public object ConvertBack(object value, Type typeTarget, object param, CultureInfo culture) { return Decimal.ToDouble((decimal)value); } } }