Input dialogue exception handling when 'x' (closing) input dialogue

[ppr (Peter Preuss)]

@Slow_Learner

user closes the input box or select [OK] without selecting any value,

can be checked with

@ppr

isNothing(creditSelected) OrElse String.IsNullOrEmpty(creditSelected.Trim)

@Slow_Learner

it needs to throw an error, error should be visible to user(to select any value or any system built)

can be modelled e.g. within a message box or others

@Slow_Learner

is (do while) is the only way to solve this?

No, we also would recommend to not risk an endless running loop