Sample code is wrong.

[Rob A.]

FYI 

https://docs.telerik.com/devtools/wpf/controls/radimageeditor/getting-started

In example 3 your trying to pass a RadImageEditor control into a sub that uses RadImageEditorUI.  If you change to the following it works:

Public Shared Sub LoadSampleImage(ByVal imageEditor As RadImageEditor, ByVal image As String)

    Using stream As Stream = Application.GetResourceStream(GetResourceUri(SampleImageFolder & image)).Stream
        imageEditor.Image = New Telerik.Windows.Media.Imaging.RadBitmap(stream)
        imageEditor.ApplyTemplate()
        imageEditor.ScaleFactor = 0
    End Using

End Sub

[Martin Ivanov]

Hello Rob,

Thank you for the fix suggestion. We've updated the article accordingly and the change should go live within the next week. You can also find your Telerik points updated as a small gesture of gratitude for the report.

Regards,
Martin Ivanov
Progress Telerik