Reference Guide
GdPicture14.WPF Namespace / GdViewer Class / PdfGetVersion Method
Example





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    PdfGetVersion Method (GdViewer)
    In This Topic
    Returns the version of the PDF specification to which the currently displayed PDF document conforms. If the document currently displayed in the GdViewer control is not the PDF file, the method will fail.
    Syntax
    'Declaration
     
    
    Public Function PdfGetVersion() As String
    public string PdfGetVersion()
    public function PdfGetVersion(): String; 
    public function PdfGetVersion() : String;
    public: string* PdfGetVersion(); 
    public:
    String^ PdfGetVersion(); 

    Return Value

    The value of the PDF version conformity as a string. Please always use the GetStat method to determine if this method has been successful.
    Remarks
    Please note that this method is only meaningful for PDF documents, otherwise it returns an empty string. We strongly recommend using the GetStat method to identify the specific reason for the method's failure.
    Example
    How to get the current version of the PDF specification to which the displayed PDF document conforms.
    'We assume that the GdViewer1 control has been properly integrated.
    If GdViewer1.DisplayFromFile("") = GdPictureStatus.OK Then
        Dim message As String = "The current file is: " + GdViewer1.GetLastPath()
        If GdViewer1.GetDocumentType() = DocumentType.DocumentTypePDF Then
            message += vbCrLf + "Author: " + GdViewer1.PdfGetAuthor() +
                       vbCrLf + "Title: " + GdViewer1.PdfGetTitle() +
                       vbCrLf + "Subject: " + GdViewer1.PdfGetSubject() +
                       vbCrLf + "PDF Version: " + GdViewer1.PdfGetVersion()
        Else
            message += vbCrLf + "This file is not a PDF document, its format is: " + GdViewer1.GetDocumentType().ToString()
        End If
        MessageBox.Show(message, "GdViewer.PdfGetVersion")
    Else
        MessageBox.Show("The file can't be loaded. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.PdfGetVersion")
    End If
    //We assume that the GdViewer1 control has been properly integrated.
    if (GdViewer1.DisplayFromFile("") == GdPictureStatus.OK)
    {
        string message = "The current file is: " + GdViewer1.GetLastPath();
        if (GdViewer1.GetDocumentType() == DocumentType.DocumentTypePDF)
        {
            message += "\nAuthor: " + GdViewer1.PdfGetAuthor() +
                       "\nTitle: " + GdViewer1.PdfGetTitle() +
                       "\nSubject: " + GdViewer1.PdfGetSubject() +
                       "\nPDF Version: " + GdViewer1.PdfGetVersion();
        }
        else
        {
            message += "\nThis file is not a PDF document, its format is: " + GdViewer1.GetDocumentType().ToString();
        }
        MessageBox.Show(message, "GdViewer.PdfGetVersion");
    }
    else
        MessageBox.Show("The file can't be loaded. Status: " + GdViewer1.GetStat().ToString(), "GdViewer.PdfGetVersion");
    See Also