How to superimpose PDF pages 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 superimpose PDF pages using C# and VB.NET.
Steps to superimpose PDF pages 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.Graphics; using Syncfusion.Pdf.Parsing; using System.Drawing;
VB.NET
Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Graphics Imports Syncfusion.Pdf.Parsing Imports System.Drawing
- Use the following code snippet to superimpose the PDF pages.
C#
//Load the PDF documents
PdfLoadedDocument ldDoc1 = new PdfLoadedDocument("BorderTemplate.pdf");
PdfLoadedDocument ldDoc2 = new PdfLoadedDocument("SourceTemplate.pdf");
//Create the new PDF document
PdfDocument doc = new PdfDocument();
for (int i = 0, count = ldDoc2.Pages.Count; i < count; ++i)
{
//Add a new page to the document
PdfPage page = doc.Pages.Add();
//Create the graphics
PdfGraphics g = page.Graphics;
//Load the page from loaded document
PdfPageBase lpage = ldDoc2.Pages[i];
//Create template
PdfTemplate template = lpage.CreateTemplate();
g.DrawPdfTemplate(template, PointF.Empty, page.GetClientSize());
//Load the page from loaded document
lpage = ldDoc1.Pages[0];
//Create template
template = lpage.CreateTemplate();
//Draw template
g.DrawPdfTemplate(template, PointF.Empty, page.GetClientSize());
}
//Save the document
doc.Save("SuperimposePDF.pdf");
//Close the documents
ldDoc1.Close(true);
ldDoc2.Close(true);
doc.Close(true);
//This will open the PDF file so, the result will be seen in default PDF viewer
Process.Start("SuperimposePDF.pdf");
VB.NET
'Load the PDF documents
Dim ldDoc1 As PdfLoadedDocument = New PdfLoadedDocument("BorderTemplate.pdf")
Dim ldDoc2 As PdfLoadedDocument = New PdfLoadedDocument("SourceTemplate.pdf")
'Create the new PDF document
Dim doc As PdfDocument = New PdfDocument()
Dim i As Integer = 0, count As Integer = ldDoc2.Pages.Count
While i < count
'Add a new page to the document
Dim page As PdfPage = doc.Pages.Add()
'Create the graphics
Dim g As PdfGraphics = page.Graphics
'Load the page from loaded document
Dim lpage As PdfPageBase = ldDoc2.Pages(i)
'Create template
Dim template As PdfTemplate = lpage.CreateTemplate()
g.DrawPdfTemplate(template, PointF.Empty, page.GetClientSize())
'Load the page from loaded document
lpage = ldDoc1.Pages(0)
'Create template
template = lpage.CreateTemplate()
'Draw template
g.DrawPdfTemplate(template, PointF.Empty, page.GetClientSize())
i += 1
End While
'Save the document
doc.Save("SuperimposePDF.pdf")
'Save the documents
doc.Close(True)
ldDoc1.Close(True)
ldDoc2.Close(True)
'This will open the PDF file so, the result will be seen in default PDF viewer
Process.Start("SuperimposePDF.pdf")
A complete working sample can be downloaded from SuperimposePDFSample.zip.
Take a moment to peruse the documentation, where you can find other options like rearranging pages from an existing PDF document, rotating a PDF page, inserting pages in a document, changing the page numbers in a PDF document with code examples.
Refer here to explore the rich set of Syncfusion Essential PDF features.
An online sample link to overlay two different documents into a single PDF document.
Note:
Starting with v16.2.0.x, if you reference Syncfusion® assemblies from the trial setup or the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion® license key in your application to use the components without a trial message.
Conclusion:
I hope you enjoyed learning about how to superimpose PDF pages using C# and VB.NET.
You can refer to our Flutter PDF feature tour page to learn about its other groundbreaking features and documentation, and how to quickly get started with configuration specifications. You can also explore our Flutter PDF Flutter PDF examples to understand how to create and manipulate data.
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