PdfOptionalContentVisibility.Groups Property

Provides access to objects stored in the PdfOptionalContentGroupVisibilityCollection.

Assembly : DevExpress.Pdf.v25.2.Core.dll

Declaration

C#
VB.NET

csharp

public PdfOptionalContentGroupVisibilityCollection Groups { get; }

Public ReadOnly Property Groups As PdfOptionalContentGroupVisibilityCollection

Property Value

Type	Description
PdfOptionalContentGroupVisibilityCollection

A collection of PdfOptionalContentGroupVisibility 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.

Example

How to: Hide Document layers

The following code snippet hides two layers in the “PdfLayers.pdf” document and displays the third layer:

C#
VB.NET

csharp

using DevExpress.Pdf;
using System;
using System.Linq;
using DevExpress.Drawing;

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);
}

Imports DevExpress.Pdf
Imports System
Imports System.Linq
Imports DevExpress.Drawing

Using processor As 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.
    Dim bitmap As DXBitmap = processor.CreateDXBitmap(1, 1000)
    Dim pdfPrinterSettings As New PdfPrinterSettings()
    processor.Print(pdfPrinterSettings)
End Using