FluentValidation rule for null object

Question

I\'ve been trying to work out how to create a FluentValidation rule that checks if the instance of an object it\'s validating is not null, prior to validating it\'s properti

Answer 1

By means of Custom(). It can be also very helpful when validation of another field is based on validation of your current field.

ruleBuilder.Custom((obj, context) =>
        {
            if (obj != null)
            {
                var propertyName = ;
                context.AddFailure(propertyName, "'Your field name' Your validation message.");
            }
        });