PdfViewerBookmarkExtensions.FindBookmark(IEnumerable<PdfViewerBookmark>, Func<PdfViewerBookmark, Boolean>) Method

Finds a bookmarks that meets the specified criteria.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v24.1.Core.dll

NuGet Package: DevExpress.Pdf.Core

Declaration

C#

public static PdfViewerBookmark FindBookmark(
    this IEnumerable<PdfViewerBookmark> bookmarks,
    Func<PdfViewerBookmark, bool> predicate
)

VB.NET

<ExtensionAttribute>
Public Shared Function FindBookmark(
    bookmarks As IEnumerable(Of PdfViewerBookmark),
    predicate As Func(Of PdfViewerBookmark, Boolean)
) As PdfViewerBookmark

Parameters

Name	Type	Description
bookmarks	IEnumerable<PdfViewerBookmark>	A list of bookmarks where to search.
predicate	Func<PdfViewerBookmark, Boolean>	An object that defines a set of criteria for the bookmark.

Returns

Type	Description
PdfViewerBookmark	The target bookmark.

Remarks

The code sample below shows how to find a bookmark with a specific title:

C#

using DevExpress.Pdf;
using DevExpress.XtraPdfViewer;
//...
pdfViewer.DocumentChanged += pdfViewer_DocumentChanged;

private void pdfViewer_DocumentChanged(object sender, PdfDocumentChangedEventArgs e) {
    var bookmark = pdfViewer.Bookmarks.FindBookmark(x => x.Title == "4 Notation");
    if (bookmark != null) { 
        pdfViewer.GoToBookmark(bookmark); 
    }
} 

VB.NET

Imports DevExpress.Pdf
Imports DevExpress.XtraPdfViewer
'...
Private pdfViewer.DocumentChanged += AddressOf pdfViewer_DocumentChanged

Private Sub pdfViewer_DocumentChanged(ByVal sender As Object, ByVal e As PdfDocumentChangedEventArgs)
    Dim bookmark = pdfViewer.Bookmarks.FindBookmark(Function(x) x.Title = "4 Notation")
    If bookmark IsNot Nothing Then
        pdfViewer.GoToBookmark(bookmark)
    End If
End Sub