Walkthrough: Hosting a Windows Forms Control in Windows Presentation Foundation by Using XAML
How to add a Windows form control to a WPF project in XAML. Add WindowsFormsIntegration assembly to your project Add Windows Forms assembly Now you can use the controls In your Window add: xmlns:wf=”clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms” Now the controls can be used like: <WindowsFormsHost> <wf:MaskedTextBox x:Name=”mtbDate” Mask=”00/00/0000″/> </WindowsFormsHost> Source: Link