Hi Rich,
In general, older samples can be converted by simply removing the old references and adding references to Tools.Base, Tools.Windows, Shared.Base, Shared.Windows, and Core.
I''ve converted the sample to v3.201 for you. It can be found at:
MDIForms_Docking_Sample_4123.zip.
Please let me know if you have any questions about the sample.
Regards,
Gregory Austin
Syncfusion Inc.