Public Function New( _
   ByVal errorMessage As String, _
   ByVal applicabilityConstraint As IdeaBlade.Validation.ApplicabilityConstraint(Of T), _
   ByVal verifierCondition As IdeaBlade.Validation.VerifierCondition(Of T) _
)

Dim errorMessage As String
Dim applicabilityConstraint As IdeaBlade.Validation.ApplicabilityConstraint(Of T)
Dim verifierCondition As IdeaBlade.Validation.VerifierCondition(Of T)
 
Dim instance As New DelegateVerifier(Of T)(errorMessage, applicabilityConstraint, verifierCondition)

public DelegateVerifier<T>( 
   string errorMessage,
   IdeaBlade.Validation.ApplicabilityConstraint<T> applicabilityConstraint,
   IdeaBlade.Validation.VerifierCondition<T> verifierCondition
)

public:
DelegateVerifier<T>( 
   String^ errorMessage,
   IdeaBlade.Validation.ApplicabilityConstraint<T^>^ applicabilityConstraint,
   IdeaBlade.Validation.VerifierCondition<T^>^ verifierCondition
)

private DelegateVerifier SampleDelegateVerifier() {
  // A simple example adding a delegate verifier to ensure that Employee
  // BirthDate falls before HireDate.

  // Apply verifier only when have data for both properties.
  ApplicabilityConstraint<Employee> constraint = (emp, trigger, context) => {
    return emp.HireDate.HasValue && emp.BirthDate.HasValue ?
      VerifierApplicability.Yes : VerifierApplicability.InsufficientData;
  };

  // Define the verification performed - BirthDate must precede HireDate
  VerifierCondition<Employee> condition = (emp, trigger, context) => {
    return new VerifierResult(emp.BirthDate < emp.HireDate);
  };

  var errorMessage = "Must be born before hired";

  // Create the verifier.  Execute only after set and on instance.
  var v = new DelegateVerifier<Employee>(errorMessage, constraint, condition);
  v.VerifierOptions.ExecutionModes = VerifierExecutionModes.InstanceAndOnAfterSetTriggers;

  // Add triggers - setters for HireDate and BirthDate properties will trigger.
  v.AddTriggers(Employee.PropertyMetadata.HireDate.Name, Employee.PropertyMetadata.BirthDate.Name);

  return v;
}