PdfGraphics.AddLinkToPage(RectangleF, Int32, Single, Single) Method

Adds a link that refers to the document page with the specified number. Allows you to set a page point positioned at the top left corner of the document window.

Namespace: DevExpress.Pdf

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

NuGet Package: DevExpress.Pdf.Drawing

Declaration

C#

public void AddLinkToPage(
    RectangleF linkArea,
    int pageNumber,
    float destinationX,
    float destinationY
)

VB.NET

Public Sub AddLinkToPage(
    linkArea As RectangleF,
    pageNumber As Integer,
    destinationX As Single,
    destinationY As Single
)

Parameters

Name	Type	Description
linkArea	RectangleF	A page area (in the world coordinate system) where you can add a link.
pageNumber	Int32	The page number.
destinationX	Single	The horizontal coordinate of a target page point (in the world coordinate system) that is positioned at the top left corner of the document window.
destinationY	Single	The vertical coordinate of a target page point (in the world coordinate system) that is positioned at the top left corner of the document window.

Remarks

This method specifies the page area on which you can click to refer to a specific page location defined by the destinationX and destinationY parameters. The pageNumber parameter specifies the target page number.

To draw a link on the PDF page, use one of the following methods:

PdfGraphics.AddToPageForeground, PdfGraphics.AddToPageBackground

These methods allow you to draw content on an existing page.

PdfDocumentProcessor.RenderNewPage

Draws content on a new page.

Note

Coordinate system transformations (e.g., system rotation) are not taken into account when the AddLinkToPage method is called.

The code sample below adds a link that refers to the point with coordinates (168, 230) from the second document page.

View Example

Program.cs

using DevExpress.Pdf;
using System.Drawing;


namespace AddLinkToPage {
    class Program {
        static void Main(string[] args) {
            using (PdfDocumentProcessor processor = new PdfDocumentProcessor()) {

                // Create an empty document.
                processor.CreateEmptyDocument("..\\..\\Result.pdf");

                // Create and draw graphics.
                using (PdfGraphics graphics = processor.CreateGraphics()) {
                    DrawGraphics(graphics);

                    // Create a link to a page specifying link area, the page number and X, Y destinations.
                    graphics.AddLinkToPage(new RectangleF(180, 160, 480, 30), 1, 168, 230);

                    // Render a page with graphics.
                    processor.RenderNewPage(PdfPaperSize.Letter, graphics);
                }
            }
        }

        static void DrawGraphics(PdfGraphics graphics) {

            // Draw a text line on the page. 
            SolidBrush black = (SolidBrush)Brushes.Black;
            using (Font font = new Font("Times New Roman", 32, FontStyle.Bold)) {
                graphics.DrawString("PDF Document Processor", font, black, 180, 150);
            }
        }
    }
}

Program.vb

Imports DevExpress.Pdf
Imports System.Drawing

Namespace AddLinkToPage

    Friend Class Program

        Shared Sub Main(ByVal args As String())
            Using processor As PdfDocumentProcessor = New PdfDocumentProcessor()
                ' Create an empty document.
                processor.CreateEmptyDocument("..\..\Result.pdf")
                ' Create and draw graphics.
                Using graphics As PdfGraphics = processor.CreateGraphics()
                    DrawGraphics(graphics)
                    ' Create a link to a page specifying link area, the page number and X, Y destinations.
                    graphics.AddLinkToPage(New RectangleF(180, 160, 480, 30), 1, 168, 230)
                    ' Render a page with graphics.
                    processor.RenderNewPage(PdfPaperSize.Letter, graphics)
                End Using
            End Using
        End Sub

        Private Shared Sub DrawGraphics(ByVal graphics As PdfGraphics)
            ' Draw a text line on the page. 
            Dim black As SolidBrush = CType(Brushes.Black, SolidBrush)
            Using font As Font = New Font("Times New Roman", 32, FontStyle.Bold)
                graphics.DrawString("PDF Document Processor", font, black, 180, 150)
            End Using
        End Sub
    End Class
End Namespace

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the AddLinkToPage(RectangleF, Int32, Single, Single) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

pdf-document-api-add-link-to-page/CS/AddLinkToPage/Program.cs#L18

// Create a link to a page specifying link area, the page number and X, Y destinations.
graphics.AddLinkToPage(new RectangleF(180, 160, 480, 30), 1, 168, 230);

VB.NET

pdf-document-api-add-link-to-page/VB/AddLinkToPage/Program.vb#L16

' Create a link to a page specifying link area, the page number and X, Y destinations.
graphics.AddLinkToPage(New RectangleF(180, 160, 480, 30), 1, 168, 230)
' Render a page with graphics.