GetBookmarkCount Method (GdPicturePDF)

In This Topic

Returns the number of all available bookmark items in the currently loaded PDF document.

Bookmarks (also called outline items in the PDF Reference) are items organized in a tree-structured hierarchy, which serves as a visual table of contents to display the document’s structure to the user.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function GetBookmarkCount() As Integer

public int GetBookmarkCount()

public function GetBookmarkCount(): Integer;

public function GetBookmarkCount() : int;

public: int GetBookmarkCount();

public:
int GetBookmarkCount();

Return Value

The number of all bookmarks. The GdPicturePDF.GetStat method can be subsequently used to determine if this method has been successful.

Remarks

This method is only allowed for use with non-encrypted documents.

It is recommend to use the GdPicturePDF.GetStat method to identify the specific reason for the method's failure, if any.

Example

How to find out the number of all available bookmark items in the PDF document.

VB.NET
C#

Dim caption As String = "Example: GetBookmarkCount"
Dim gdpicturePDF As New GdPicturePDF()
Dim status As GdPictureStatus = gdpicturePDF.LoadFromFile("bookmarks.pdf", False)
If status = GdPictureStatus.OK Then
    Dim bookmarksCount As Integer = gdpicturePDF.GetBookmarkCount()
    status = gdpicturePDF.GetStat()
    If status <> GdPictureStatus.OK Then
        MessageBox.Show("The GetBookmarkCount() method has failed with the status: " + status.ToString(), caption)
    Else
        If bookmarksCount = 0 Then
            MessageBox.Show("This PDF document doesn't contain any bookmarks.", caption)
        Else
            MessageBox.Show("The number of bookmarks in this PDF document is: " + bookmarksCount.ToString(), caption)
            
            Dim rootID As Integer = gdpicturePDF.GetBookmarkRootID()
            status = gdpicturePDF.GetStat()
            If status = GdPictureStatus.OK Then
                MessageBox.Show("The title of the root bookmark is: " + gdpicturePDF.GetBookmarkTitle(rootID), caption)
            Else
                MessageBox.Show("The GetBookmarkRootID() method has failed with the status: " + status.ToString(), caption)
            End If
        End If
    End If
Else
    MessageBox.Show("The file can't be loaded. Status: " + status.ToString(), caption)
End If
gdpicturePDF.Dispose()

string caption = "Example: GetBookmarkCount";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
GdPictureStatus status = gdpicturePDF.LoadFromFile("bookmarks.pdf", false);
if (status == GdPictureStatus.OK)
{
    int bookmarksCount = gdpicturePDF.GetBookmarkCount();
    status = gdpicturePDF.GetStat();
    if (status != GdPictureStatus.OK)
        MessageBox.Show("The GetBookmarkCount() method has failed with the status: " + status.ToString(), caption);
    else
    {
        if (bookmarksCount == 0)
            MessageBox.Show("This PDF document doesn't contain any bookmarks.", caption);
        else
        {
            MessageBox.Show("The number of bookmarks in this PDF document is: " + bookmarksCount.ToString(), caption);
            
            int rootID = gdpicturePDF.GetBookmarkRootID();
            status = gdpicturePDF.GetStat();
            if (status == GdPictureStatus.OK)
                MessageBox.Show("The title of the root bookmark is: " + gdpicturePDF.GetBookmarkTitle(rootID), caption);
            else
                MessageBox.Show("The GetBookmarkRootID() method has failed with the status: " + status.ToString(), caption);
        }
    }
}
else
{
    MessageBox.Show("The file can't be loaded. Status: " + status.ToString(), caption);
}
gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
GetBookmarkRootID Method
GetBookmarkTitle Method