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I have an object graph sprinkled with DataAnnotation attributes, where some properties of objects are classes which themselves have validation attributes, and so on. In the following scenario: public class Employee { [Required] public string Name { get; set; } [Required] public Address Address { get; set; } } public class Address { [Required] public string Line1 { get; set; } public string Line2 { get; set; } [Required] public string Town { get; set; } [Required] public string PostalCode { get; set; } } If I try to validate an Employee 's Address with no value for PostalCode , then I would like (and expect) an exception, but I get none. Here's how I'm doing it: var employee = new Employee { Name = "Neil Barnwell", Address = new Address { Line1 = "My Road", Town = "My Town", PostalCode = "" // <- INVALID! } }; Validator.ValidateObject(employee, new ValidationContext(employee, null, null)); What other options do I have with Validator that would ensure all properties are validated recursively ?

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