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PDF Annotation VB.NET Library
How to Draw Markup on PDF Page in VB.NET


VB.NET Demo Codes for Draw Markup on PDF Page in VB.NET Program









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Add Annotation – Draw Markup Overview



Generally, drawing markup includes: strikethrough text, underline text, highlight text, insert and replace text. This page listed a series of VB.NET sample codes to help users to do these annotation works.

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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.





VB.NET DLLs: Draw Markup





How to VB.NET:  Strikethrough the Selected Text



This code sample offer VB.NET solution for adding a strikethrough to selected text.




Dim inputFilePath As String = Program.RootPath + "\\" + "2.pdf"
Dim outputFilePath As String = Program.RootPath + "\\" + "Annot_1.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 PDFAnnotDeleteLine = New PDFAnnotDeleteLine()

With annot
    .StartPoint = New PointF(100.0F, 200.0F)
    .EndPoint = New PointF(300.0F, 400.0F)
End With

' add annotation to the page
PDFAnnotHandler.AddAnnotation(page, annot)

' save to a new file
doc.Save(outputFilePath)





How to VB.NET:  Underline the Selected Text



This demo code provide VB.NET users with a way of adding underline to the selected text on PDF Document.




Dim inputFilePath As String = Program.RootPath + "\\" + "2.pdf"
Dim outputFilePath As String = Program.RootPath + "\\" + "Annot_2.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 PDFAnnotUnderLine = New PDFAnnotUnderLine()

With annot
    .StartPoint = New PointF(100.0F, 200.0F)
    .EndPoint = New PointF(300.0F, 400.0F)
End With

' add annotation to the page
PDFAnnotHandler.AddAnnotation(page, annot)

' save to a new file
doc.Save(outputFilePath)





How to VB.NET: Insert Text At Cursor



This code sample describes how to insert text at any cursor position 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)





How to VB.NET:  Add Note to Replace Text



Following demo code can help users to add note to replace original text in a VB.NET program.




Dim inputFilePath As String = Program.RootPath + "\\" + "2.pdf"
Dim outputFilePath As String = Program.RootPath + "\\" + "Annot_5.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 PDFAnnotTextReplace = New PDFAnnotTextReplace()

With annot
    .StartPoint = New PointF(100.0F, 200.0F)
    .EndPoint = New PointF(300.0F, 400.0F)
End With

' add annotation to the page
PDFAnnotHandler.AddAnnotation(page, annot)

' save to a new file
doc.Save(outputFilePath)