How to delete layers in 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 delete all layers or specific layer in the PDF using C# and VB.NET.
Steps to delete layer in 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; using Syncfusion.Pdf.Parsing;
VB.NET
Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Parsing
- Use the following code snippet to delete the layer in PDF
C#
//Load the existing PDF document
PdfLoadedDocument document = new PdfLoadedDocument("Layer.pdf");
//Get the layer collection
PdfDocumentLayerCollection layers = document.Layers;
//Removes the layer by its name
layers.Remove("Layer1",true);
//Removes the layer by its index
layers.RemoveAt(0,true);
//Remove all layers
layers.Clear();
//Save the layer removed document
document.Save("Output.pdf");
//Close the document
document.Close(true);
//This will open the PDF file so, the result will be seen in default PDF viewer
System.Diagnostics.Process.Start("Output.pdf");
VB.NET
'Load the existing PDF document
Dim document As New PdfLoadedDocument("Layer.pdf")
'Get the layer collection
Dim layers As PdfDocumentLayerCollection = document.Layers
'Removes the layer by its name
layers.Remove("Layer1", True)
'Removes the layer by its index
layers.RemoveAt(0, True)
'Remove all layers
layers.Clear()
'Save the layer removed document
document.Save("Output.pdf")
'Close the document
document.Close(True)
'This will open the PDF file so, the result will be seen in default PDF viewer
System.Diagnostics.Process.Start("Output.pdf")
A complete working sample can be downloaded from RemoveLayerSample.zip.
Take a moment to peruse the documentation, where you can find options like adding layers in a PDF document, adding annotation to layer, nested layers, and toggling the visibility of layers with code examples.
Refer here to explore the rich set of Essential Studio® project.
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 layers in 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. You can also explore our documentation 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!
