Is there a way to display WPF Extended Toolkit's control in VS Designer?

Question

I'm used to create my forms with the designer, and modifying the XAML manually only when needed.

Even though the extended toolkit is a fantastic library, it still lacks integration with Visual Studio's designer. Can, by any mean, the toolkit's controls be displayed in the designer (not the toolbox), like standard controls? And if not, is there an explanation?

For now, the toolkit's controls are just blank and unselectable with simple clicks.

NOTE: It seems that the issue happens with container components (like BusyIndicator and Wizard/WizardPage) only.

EDIT: Here's some of my XAML. With this, I can see the wizard's first page, but no obvious way to see the others. If I put my Wizard in a BusyIndicator, can't see a thing at all.

<Window x:Class="MyProgram.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:MyProgram"
        xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
        Title="My Program" Height="477" Width="688" MinWidth="688" MinHeight="478">
    <xctk:Wizard x:Name="wizard" FinishButtonClosesWindow="True" Next="wizard_Next">
        <xctk:WizardPage Name="Intro_Page"  Title="ABC" Description="abc" NextPage="{Binding ElementName=Second_Page}" Enter="disallowNext">
            <xctk:WizardPage.Content>
                <Grid>
                    <Label Content="abc" HorizontalAlignment="Center" Margin="0,54,0,87" Name="intro_lbl" VerticalAlignment="Center" Grid.Column="1" Padding="5" HorizontalContentAlignment="Center" Height="28" IsEnabled="False" />
                 </Grid>
            </xctk:WizardPage.Content>
        </xctk:WizardPage>
        <xctk:WizardPage Name="Second_Page" Title="DFG" Description="dfg" NextPage="{Binding ElementName=Last_Page}">
            <xctk:WizardPage.Content>
                <Grid Name="grid">
                    <TextBox Grid.Column="1" Height="23" HorizontalAlignment="Stretch" Name="txt_second" VerticalAlignment="Center" />
                </Grid>
            </xctk:WizardPage.Content>
        </xctk:WizardPage>
        <xctk:WizardPage Name="Last_Page" PageType="Interior"
                         Title="Last Page"
                         Description="This is the last page in the process"
                         CanFinish="True" />
    </xctk:Wizard>
</Window>

Answer 1

I know this answer comes late, but yesterday I was stumbling myself over this problem and maybe it is useful for others who land here.

I solved it by creating an own control derived from WizardPage. Just Create a new UserControl, include the Xceed.Wpf.Toolkit namespace and change the Type from UserControl to xctk:WizardPage in the xaml file as well as in the code-behind file.

<xctk:WizardPage x:Class="WizardTest.MyWizardPage"
             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:xctk="clr-namespace:Xceed.Wpf.Toolkit;assembly=Xceed.Wpf.Toolkit"
             xmlns:local="clr-namespace:WizardTest"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
  <Grid>
    <TextBlock>Hello World!</TextBlock>
  </Grid>
</xctk:WizardPage>

Now you can create your UI using the VisualStudio Designer. To place your page in the wizard, simply put an object of you derived page into its items:

<xctk:Wizard>
  <local:MyWizardPage Title="My Wizard Page"/>
</xctk:Wizard>

You can use Bindungs in your costum page out of the box because DataContext of the MyWizardPage object is set automatically to the wizards DataContext (which inherits from the Window DataContext if not explicitly given)