Functional Validation using Lambda Expression

So you can use look Linq for validations as well. In our example i am using an Email object and i am doing two types of basic validations on that so here is the code,

public class EmailAddress
{
   public string Email;
}

So the conventional validations would be,

public class NonFuncationalValidation
{
    public bool Validate(EmailAddress emailAddress)
    {
        if (!emailAddress.Email.Contains("@"))
            return false;
        if (!emailAddress.Email.Contains(".com"))
            return false;
        return true;
    }
}

Lets transform it to functional validation. If you see here i have converted the list of ifs to set of rules. By the end i am using the method All which will start varifying the rules and the moment it encountered with a rule that is voilated it will stop and exit.

public class FuncationalValidation
{
    public bool Validate(EmailAddress emailAddress)
    {
        Func & lt;
        EmailAddress, bool & gt;
        [] rules = {
            em = & gt;!emailAddress.Email.Contains("@"),
            em = & gt;!emailAddress.Email.Contains(".com")
        };
        return rules.All(x = & gt; x(emailAddress) == false);
    }
}