''' <summary>
''' Returns the PDF document conformance from the PDF document metadata.
''' </summary>
''' <param name="pdfFilename">The filename of PDF document.</param>
Public Shared Sub GetDocumentConformanceInfo(pdfFilename As String)
    ' open PDF document
    Using document As New Vintasoft.Imaging.Pdf.PdfDocument(pdfFilename)
        ' get the PDF document conformance
        Dim conformance As Vintasoft.Imaging.Pdf.PdfDocumentConformance = document.GetDocumentConformance()

        ' output information about the PDF document conformance

        If conformance = Vintasoft.Imaging.Pdf.PdfDocumentConformance.Undefined Then
            System.Console.WriteLine("Conformance is undefined.")
        Else
            System.Console.WriteLine(String.Format("Document metadata declares conformance with {0} format.", conformance))
        End If
    End Using
End Sub

/// <summary>
/// Returns the PDF document conformance from the PDF document metadata.
/// </summary>
/// <param name="pdfFilename">The filename of PDF document.</param>
public static void GetDocumentConformanceInfo(string pdfFilename)
{
    // open PDF document
    using (Vintasoft.Imaging.Pdf.PdfDocument document = 
        new Vintasoft.Imaging.Pdf.PdfDocument(pdfFilename))
    {
        // get the PDF document conformance
        Vintasoft.Imaging.Pdf.PdfDocumentConformance conformance = document.GetDocumentConformance();

        // output information about the PDF document conformance

        if (conformance == Vintasoft.Imaging.Pdf.PdfDocumentConformance.Undefined)
        {
            System.Console.WriteLine("Conformance is undefined.");
        }
        else
        {
            System.Console.WriteLine(string.Format("Document metadata declares conformance with {0} format.",
                conformance));
        }
    }
}