public void BirthDayValidation(ValidationArgs args)
{
var birthDay = (DateTime)args.Value;
var isValid = birthDay.AddYears(21) <= DateTime.Today;
args.SetError(isValid, "Sorry, you're too young!");
}
public void UserNameValidation(ValidationArgs args)
{
var name = (string)args.Value;
var isValid = name != "UserName";
args.SetError(isValid, "A user with this name is already registered!");
}
public void AgeValidation(ValidationArgs args)
{
var age = (decimal)args.Value;
var isValid = age >= 21;
args.SetError(isValid, "Sorry, you're too young!");
}