要为特定属性指定验证规则，请调用RuleFor方法，传递一个表示要验证的属性的lambda表达式
RuleFor(p => p.DateOfBirth)
要运行验证器，请实例化验证器对象并调用Validate方法，将要验证的对象传递给它。
ValidationResult results = validator.Validate(person);
Validate方法返回一个ValidationResult对象。它包含两个属性
IsValid - 一个布尔值，表示验证是否成功。
Errors - 包含有关任何验证失败的详细信息的ValidationFailure对象集合
示例1
static void Main(string[] args) {
List errors = new List();
PersonModel person = new PersonModel();
person.FirstName = "TestUser";
person.LastName = "TestUser";
person.AccountBalance = 100;
person.DateOfBirth = DateTime.Now.Date.AddYears(1);
PersonValidator validator = new PersonValidator();
ValidationResult results = validator.Validate(person);
if (results.IsValid == false) {
foreach (ValidationFailure failure in results.Errors){
errors.Add(failure.ErrorMessage);
}
}
foreach (var item in errors){
Console.WriteLine(item);
}
Console.ReadLine();
}
}
public class PersonModel {
public string FirstName { get; set; }
public string LastName { get; set; }
public decimal AccountBalance { get; set; }
public DateTime DateOfBirth { get; set; }
}
public class PersonValidator : AbstractValidator{
public PersonValidator(){
RuleFor(p => p.DateOfBirth)
.Must(BeAValidAge).WithMessage("Invalid {PropertyName}");
}
protected bool BeAValidAge(DateTime date){
int currentYear = DateTime.Now.Year;
int dobYear = date.Year;
if (dobYear <= currentYear && dobYear > (currentYear - 120)){
return true;
}
return false;
}
}输出
Invalid Date Of Birth
