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#1 Posted : Friday, September 14, 2018 10:49:57 AM(UTC)
Anthony Northrup

Groups: Registered, Tech Support, Administrators
Posts: 199

Was thanked: 27 time(s) in 27 post(s)

The LEADTOOLS v20 SDK supports both importing from and exporting to PDF annotations. For more information about this support, refer to the following page:
https://www.leadtools.com/sdk/pdf#annotation

Code:
The main method used for conversion is the AnnPDFConvertor.ConvertToPDF method. Here is a complete sample function for adding a list of AnnContainers to a PDF:
Code:

static void LEADToPDF(IEnumerable<AnnContainer> containers, string pdfFile)
{
	// Load the information about the PDF file
	PDFFile file = new PDFFile(pdfFile);
	file.Load();

	// Convert all annotations
	List<PDFAnnotation> fileAnnotations = new List<PDFAnnotation>();
	int page = 1;
	foreach (AnnContainer container in containers)
	{
		// Convert the page annotations
		List<PDFAnnotation> pageAnnotations = new List<PDFAnnotation>();
		AnnPDFConvertor.ConvertToPDF(container, pageAnnotations, file.Pages[page - 1].Height);

		// Set the page number
		foreach (PDFAnnotation annotation in pageAnnotations)
			annotation.PageNumber = page;

		// Add to the total list
		fileAnnotations.AddRange(pageAnnotations);

		// Increment the page count
		page++;
	}

	// Write the annotations to the file
	file.WriteAnnotations(fileAnnotations, pdfFile);
}


Sample Project:
This project is from an old post, but has been updated to the LEADTOOLS v20 SDK using Visual Studio 2017. Note, the new project is now a console application that can be unzipped to any directory. If you do not have the LEADTOOLS SDK installed in "C:\LEADTOOLS 20", simply update the output path inside the project configuration.
File Attachment(s):
CS_SaveAnnotationsAsPdf20.zip (4kb) downloaded 191 time(s).
Anthony Northrup
Developer Support Engineer
LEAD Technologies, Inc.

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