UiPath Apps - Validation function - How to use?

[Arvind_Kumar1 (Arvind Kumar)]

@PeCour ,

to do validation please follow below approach.

1. Set Required = True on control
2. Set message to display when your interact with control

Now there is two way you can achieve this functionality.
Disable button

1. Add button
2. Each control has new field “Is Valid”
3. Use this field to validate required field
4. Set expression on button Disabled as below
   !ControlName.IsValid

If Rule condition

1. Add button
2. Add If else condition to validate as below

Result on user interaction with control

Hope this will help you . Please let me know if you are still unable to do.

Thanks,
Arvind