Convert if condition into ternary with C#

Question

I would like to use ternary operator in order to factorize if condition.

I know the process : condition ? consequent : alternative

I have the if condition following :

if (!myField.IsNullOrNa())
    {
        messageErreur += myField.IsDecimalWithMessage(nameof(myField));
    }

I would like to write :

 messageErreur += !myField.IsNullOrNa() ? myField.IsDecimalWithMessage(nameof(myField)) : 

What I have to write as alternative ?

Answer 1

If you have multiple fields to check, simply make a small helper method that returns a string (or empty) based on a condition (boolean):

messageErreur += Check(!myField.IsNullOrNa(), myField.IsDecimalWithMessage(nameof(myField)); 
messageErreur += Check(myField.HasError(), myField.HasError(nameof(myField)); 

private string Check(bool condition, string message) => condition ? message : string.Empty;