FluentValidationValidatorSample

CreateUserCommandValidator.cs

using FluentValidation;
using Users.API.Application.Commands;

namespace Users.API.Application.Validators
{
    public class CreateUserCommandValidator : AbstractValidator<CreateUserCommand>
    {
        public CreateUserCommandValidator()
        {
            RuleFor(x => x.Email).NotNull().NotEmpty();
            RuleFor(x => x.MonthlyExpenses).GreaterThanOrEqualTo(0);
            RuleFor(x => x.MonthlySalary).GreaterThanOrEqualTo(0);
        }
    }
}