DynamicForm.validate() doens't call FormItem.validate()?

[JohnSmith]

If a DynamicForm.validate() doens't call FormItem.validate(), how can you create custom FormItem deriving from CanvasItem and override customItem.validate() to contribute to the DynamicForm.validate()?

[Isomorphic]

You don't - you declare validators, including custom validators which can run arbitrary logic.

[JohnSmith]

I have a CanvasItem composed of a ListGrid. On calling StartEditingNew, the validations are running and errors are being displayed inside the ListGrid but when I submit the DynamicForm, it shows no errors