Adding WPF controls in WinForm

[Pixy]

I would like to use modern UI controls in my WinForms project and ideally, HandyControl. Since xaml is not used in WinForms, I followed microsoft's Hosting a WPF Composite Control in Windows Forms guide without success.

MyControls WPF UserControl MyControl1.xaml

<UserControl x:Class="UserControl1"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:MyControls"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <UserControl.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/SkinDefault.xaml"/>
                <ResourceDictionary Source="pack://application:,,,/HandyControl;component/Themes/Theme.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </UserControl.Resources>
    <Grid>
            
    </Grid>
</UserControl>

WinForms Form1_Load

Dim host = New ElementHost()
host.Dock = DockStyle.Fill
Panel1.Controls.Add(host)
Dim uc = New MyControls.UserControl1
uc.InitializeComponent()
host.Child = uc

All references are included and the projects compile without problems, but I cannot use any WPF or HandyControl controls. Ideally I would like to add HandyControl or WPF controls in my toolbox. Any ideas?