'DeclarationPublic Function UseGiftCertificate( _ ByVal CertificateNumberText As String _ ) As String
'UsageDim instance As GiftCertificate Dim CertificateNumberText As String Dim value As String value = instance.UseGiftCertificate(CertificateNumberText)
public string UseGiftCertificate( string CertificateNumberText )
Parameters
- CertificateNumberText
 - The certificate number text.
 
Return Value
Error message, or null, if successful.