Thank you for writing back.
As the name of the event implies, the LayoutLoaded event is fired after the layout has been loaded. In the event handler of the event you can check if the columns from the layout match the ones from the data source and take appropriate actions if they do not.
I hope this will solve your case. As to the documentation, we are currently working on it and it will be uploaded soon.
If there is anything else I can assist you with, do not hesitate to open a new support ticket or forum thread.
the Telerik team
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