##1. INTRODUCTION NValidator is a lightweight extensible validation library for .NET that support fluent syntax. The implementation and fluent syntax are inspired from the well-known library Fluent Validation. However, I implemented it using Chain of Reponsibility pattern and made it fully support Dependency Injection for validator classes.
Here is a simple example that can help you to start:
public class UserValidator : TypeValidator<User>
{
public UserValidator()
{
RuleFor(user => user.Id)
.NotEmpty()
.NotNull();
RuleFor(user => user.UserName)
.NotNull()
.Length(6, 10)
.Must(x => !x.Contains(" ")).WithMessage("@PropertyName cannot contain empty string.");
RuleFor(user => user.Password)
.StopOnFirstError()
.NotEmpty()
.Length(6, 20)
.Must(x => x.Any(c => c >= 'a' && c <= 'z') &&
x.Any(c => c >= '0' && c <= '9') &&
x.Any(c => c >= 'A' && c <= 'Z')).WithMessage("@PropertyName must contain both letter and digit.");
RuleFor(user => user.Title)
.In("MR", "MS", "MRS", "DR", "PROF", "REV", "OTHER");
RuleFor(user => user.FirstName)
.NotEmpty().WithMessage("Please specify the first name.");
RuleFor(user => user.LastName)
.NotEmpty().WithMessage("Please specify the last name.");
RuleFor(user => user.Email)
.Email();
RuleFor(user => user.Address)
.SetValidator<AddressValidator>()
.When(x => x != null);
}
}
##2. DOCUMENT Please checkout the document and other topics to get started.
The NuGet package NValidator is also available.
##3. LICENCE http://sam.zoy.org/wtfpl/COPYING