PDF Annotation VB.NET Library
How to Highlight PDF Text in VB.NET
Online VB.NET Tutorial of How to Highlight Selected PDF Text on PDF Page in VB.NET
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Add Annotation – Highlight Text Overview
Users will often face the situation that you may need to emphasize the most important information from all text on a PDF page. Highlight text is such a functionality which allow users to give prominence to key words or sentences. RasterEdge XDoc.PDF SDK is a multifunctional PDF document annotation tool, which can highlight text with a simple piece of VB.NET programming demo code.
Since RasterEdge XDoc.PDF SDK is based on .NET framework 2.0, users are enabled to use it in any type of a 32-bit or 64-bit .NET application, including ASP.NET web service and Windows Forms for any .NET Framework version from 2.0 to 4.5.
How to VB.NET: Highlight Selected Text on PDF Page
This sample code shows how to highlight PDF text in VB.NET application.
Dim inputFilePath As String = Program.RootPath + "\\" + "2.pdf"
Dim outputFilePath As String = Program.RootPath + "\\" + "Annot_3.pdf"
' open a PDF file
Dim doc As PDFDocument = New PDFDocument(inputFilePath)
' get the 2nd page
Dim page As PDFPage = doc.GetPage(1)
' create the annotation
Dim annot As PDFAnnotHighlight = New PDFAnnotHighlight()
annot.StartPoint = New PointF(100.0F, 200.0F)
annot.EndPoint = New PointF(300.0F, 400.0F)
' add annotation to the page
page.AddPDFAnnot(annot)
' save to a new file
doc.Save(outputFilePath)
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