Imports System

Namespace myComponents

Public Class BizObject

  Sub CheckOrder( _
    Customer As String, _
    Product As String, _
    UnitPrice As Double, _
    Quantity As Integer, _
    State As String )

    If Quantity <= 0 Or quantity > 100 Then
      Throw New ArgumentException( "Invalid Quantity!" )
    End If

    If State = "California" And Product="Hair Dryer" Then
      Throw New ArgumentException( "Californians cannot own Hair Dryers!" )
    End IF

    If State = "Washington" Then
      unitPrice += unitPrice * .06
    End If

    Dim myDataObject As New DataObject
    myDataObject.SaveOrder( customer, product, unitPrice, quantity, state )

  End Sub

End Class

End Namespace