PdfOptionalContentGroupVisibilityCollection Class
A collection of PdfOptionalContentGroupVisibility objects.
Namespace: DevExpress.Pdf
Assembly: DevExpress.Pdf.v24.2.Core.dll
NuGet Package: DevExpress.Pdf.Core
#Declaration
public class PdfOptionalContentGroupVisibilityCollection :
IReadOnlyList<PdfOptionalContentGroupVisibility>,
IReadOnlyCollection<PdfOptionalContentGroupVisibility>,
IEnumerable<PdfOptionalContentGroupVisibility>,
IEnumerable
#Related API Members
The following members return PdfOptionalContentGroupVisibilityCollection objects:
#Remarks
The PdfOptionalContentGroupVisibility class contains visibility settings that correspond to a layer (the PdfOptionalContentGroup object). All PdfOptionalContentGroupVisibility
objects are stored in a PdfOptionalContentGroupVisibilityCollection
object and can be accessed with the PdfDocumentFacade.OptionalContentVisibility.Groups property by index.
The following code snippet hides two layers in the “PdfLayers.pdf” document and displays the third layer:
using DevExpress.Pdf;
using System;
using System.Linq;
using DevExpress.Drawing;
static void Main(string[] args) {
using (PdfDocumentProcessor processor = new PdfDocumentProcessor()) {
processor.LoadDocument("PdfLayers.pdf");
// Set visibility settings for each layer contained in a document.
processor.DocumentFacade.OptionalContentVisibility.Groups[0].Visible = false;
processor.DocumentFacade.OptionalContentVisibility.Groups[1].Visible = false;
processor.DocumentFacade.OptionalContentVisibility.Groups[2].Visible = true;
// Print the document.
DXBitmap bitmap = processor.CreateDXBitmap(1, 1000);
PdfPrinterSettings pdfPrinterSettings = new PdfPrinterSettings();
processor.Print(pdfPrinterSettings);
}
}
Refer to the following topic for more information on how to control layer visibility: Manage Visibility of Layers (Optional Content Groups).