WPF

public partial class DeepDisplay : UserControl
    {
        private static DeepDisplay instance;
        private static object lockObject = new object();

        private DeepDisplay()
        {
            InitializeComponent();
        }

        public static DeepDisplay GetInstance()
        {
            lock (lockObject)
            {
                if (instance == null)
                    instance = new DeepDisplay();
            }
            return instance;
        }
     }

<local:DeepDisplay x:Name="deepDisplay" Width="Auto"></local:DeepDisplay>