Validation

Validation.cs

namespace MyCompany.Infrastructure.Validation
{
    // implemented in UI layer
    public interface IValidationListener
    {
        void OnError(string error);
        void OnWarning(string warning);
        bool IsIgnored(string warning);
    }

    // stops on first error but reports all warnings
    public interface IValidator
    {
        /// <returns>False if any error or warning</returns>
        bool Validate(IValidationListener listener);
    }
}