Thank you for writing.
I apologize for the late reply. Currently TKDataForm does not support multiline text entry. This feature is already logged in our feedback portal
and is scheduled for our Q1 release in January. I hope this time frame is OK for you.
If you have further questions, do not hesitate to contact us.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items