How to delete bookmarks from a PDF using C# and VB.NET?
Syncfusion Essential® PDF is a .NET PDF Library used to create, read, and edit PDF documents. Using this library, you can remove all the bookmarks or specified bookmark from PDF using C# and VB.NET.
Steps to delete bookmarks from PDF programmatically:
- Create a new C# console application project.
- Install the Syncfusion.Pdf.WinForms NuGet package as reference to your .NET Framework application from NuGet.org.
- Include the following namespaces in the Program.cs file.
C#
using Syncfusion.Pdf.Interactive; using Syncfusion.Pdf.Parsing;
VB.NET
Imports Syncfusion.Pdf.Interactive Imports Syncfusion.Pdf.Parsing
- Use the following code snippet to delete bookmarks from PDF document.
C#
//Loads the PDF document
PdfLoadedDocument document = new PdfLoadedDocument("Bookmark.pdf");
//Gets all the bookmarks
PdfBookmarkBase bookmarks = document.Bookmarks;
//Removes bookmark by index
bookmarks.RemoveAt(0);
//Removes bookmark by its name
bookmarks.Remove("Chapter 2");
//Save the bookmarks removed PDF document
document.Save("Sample.pdf");
//Close the document
document.Close(true);
//This will open the PDF file so, the result will be seen in default PDF viewer
Process.Start("Sample.pdf");
VB.NET
'Loads the PDF document
Dim document As New PdfLoadedDocument("Bookmark.pdf")
'Gets all the bookmarks
Dim bookmarks As PdfBookmarkBase = document.Bookmarks
'Removes bookmark by index
bookmarks.RemoveAt(0)
'Removes bookmark by its name
bookmarks.Remove("Chapter 2")
'Save the bookmarks removed PDF document
document.Save("Sample.pdf")
'Close the document
document.Close(True)
'This will open the PDF file so, the result will be seen in default PDF viewer
Process.Start("Sample.pdf")
A complete working sample can be downloaded from RemoveBookmarkSample.zip.
Take a moment to peruse the documentation, where you can find other options like adding, Inserting and modifying bookmarks in an existing PDF document and features like named destination, interactive annotations, PDF form filling, and insert hyperlink to PDF with code examples.
Refer here to explore the rich set of Syncfusion Essential® PDF features.
Starting with v16.2.0.x, if you reference Syncfusion® assemblies from trial setup or from the NuGet feed, include a license key in your projects. Refer to link to learn about generating and registering Syncfusion® license key in your application to use the components without trail message.
Conclusion
I hope you enjoyed learning about how to delete bookmarks from a PDF using C# and VB.NET.
You can refer to our WinForms PDF feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WinForms PDF example to understand how to create and manipulate data.
For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion®, you can try our 30-day free trial to check out our other controls.
If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!
