Is it possible to use custom validation for DataGrid?

Hello.

Sorry for the rudimentary question, but please tell me.

Is it possible to use custom validation for DataGrid?

I need to check if the value entered in the column has already been entered (duplicate) and I think this requires creating a custom validation.

Is custom validation available for DataGrid? Also, are there any examples?

You can check my reply in this thread: Does radzen number only validator exist? or phone number? - #6 by korchev It shows how to create a custom validator.