<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="120" Width="300"> <StackPanel> <ProgressBar Width="200" Height="100" x:Name="progress" Value="30" HorizontalAlignment="Center" Margin="10"/> <Slider Value="{Binding ElementName=progress, Path=Value, Mode=TwoWay}" Minimum="0" Maximum="100" Margin="10"/> </StackPanel> </Window>