We have added validation to the Grid using Fluent Validation and this works perfectly. However in the validation we have to go to a back-end API to check if the value is not a duplicate.
The current behavior is that the Fluent Validation goes off whenever you type, this causes a lot of load on the API. Is there a way to change this? Maybe so it only occurs when you press the Save button, or when you leave the input field, or after x seconds of no typing...
Another valid option would be to do the check in the Update or Create Handler, but how do we display a nice error message that way to the user?
Thank you in advance