Enabling Scrollbar in WPF

Put a ScrollViewer inside your Window:

<Window x:Class="WpfApplication2.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">

    <ScrollViewer >
        <!-- Window content here -->
    </ScrollViewer>
</Window>