using IronPdf;
// Create a new PDF or load and edit an existing document.
var pdf = PdfDocument.FromFile("existing.pdf");
int pageIndex1 = 0;
int pageIndex2 = 1;
// Create a PDF annotation object on a specified page index
var annotation1 = new IronPdf.Annotations.TextAnnotation(pageIndex1)
{
Title = "This is the major title 1",
Contents = "This is the long 'sticky note' comment 1st content...",
X = 150,
Y = 200,
Width = 200,
Height = 50,
Opacity = 0.9,
Printable = false,
Hidden = false,
OpenByDefault = true,
ReadOnly = false,
Rotatable = true
};
var annotation2 = new IronPdf.Annotations.TextAnnotation(pageIndex2)
{
Title = "This is the major title 2",
Contents = "This is the long 'sticky note' comment 2nd content...",
X = 100,
Y = 150,
Width = 250,
Height = 150,
Opacity = 0.9,
Printable = false,
Hidden = false,
OpenByDefault = true,
ReadOnly = false,
Rotatable = true
};
var annotation3 = new IronPdf.Annotations.TextAnnotation(pageIndex2)
{
Title = "This is the major title 3",
Contents = "This is the long 'sticky note' comment 3rd content...",
X = 200,
Y = 150,
Width = 150,
Height = 50,
Opacity = 0.9,
Printable = false,
Hidden = false,
OpenByDefault = true,
ReadOnly = false,
Rotatable = true
};
// Add the annotation "sticky note" within any new or existing PDF.
pdf.Annotations.Add(annotation1); // annotation1 index is 0.
pdf.Annotations.Add(annotation2); // annotation2 index is 1.
pdf.Annotations.Add(annotation3); // annotation3 index is 2.
// Remove a single annotation with specified index
pdf.Annotations.RemoveAt(1); // annotation2 is removed, annotation3 index becomes 1.
// Remove all annotaions on a specified page
pdf.Annotations.RemoveAllAnnotationsForPage(0); // remove all annotaion on page 1, annotation3 index becomes 0.
// Edit a single annotation with specified index
pdf.Annotations[0].Title = "new title for annotation 3";
pdf.Annotations[0].Contents = "This is new comment content of annotation 3";
// Remove all annotaions on the document
pdf.Annotations.Clear();
pdf.SaveAs("existing.pdf");
Imports IronPdf
' Create a new PDF or load and edit an existing document.
Dim pdf = PdfDocument.FromFile("existing.pdf")
Dim pageIndex1 As Integer = 0
Dim pageIndex2 As Integer = 1
' Create a PDF annotation object on a specified page index
Dim annotation1 = New IronPdf.Annotations.TextAnnotation(pageIndex1) With {
.Title = "This is the major title 1",
.Contents = "This is the long 'sticky note' comment 1st content...",
.X = 150,
.Y = 200,
.Width = 200,
.Height = 50,
.Opacity = 0.9,
.Printable = False,
.Hidden = False,
.OpenByDefault = True,
.ReadOnly = False,
.Rotatable = True
}
Dim annotation2 = New IronPdf.Annotations.TextAnnotation(pageIndex2) With {
.Title = "This is the major title 2",
.Contents = "This is the long 'sticky note' comment 2nd content...",
.X = 100,
.Y = 150,
.Width = 250,
.Height = 150,
.Opacity = 0.9,
.Printable = False,
.Hidden = False,
.OpenByDefault = True,
.ReadOnly = False,
.Rotatable = True
}
Dim annotation3 = New IronPdf.Annotations.TextAnnotation(pageIndex2) With {
.Title = "This is the major title 3",
.Contents = "This is the long 'sticky note' comment 3rd content...",
.X = 200,
.Y = 150,
.Width = 150,
.Height = 50,
.Opacity = 0.9,
.Printable = False,
.Hidden = False,
.OpenByDefault = True,
.ReadOnly = False,
.Rotatable = True
}
' Add the annotation "sticky note" within any new or existing PDF.
pdf.Annotations.Add(annotation1) ' annotation1 index is 0.
pdf.Annotations.Add(annotation2) ' annotation2 index is 1.
pdf.Annotations.Add(annotation3) ' annotation3 index is 2.
' Remove a single annotation with specified index
pdf.Annotations.RemoveAt(1) ' annotation2 is removed, annotation3 index becomes 1.
' Remove all annotations on a specified page
pdf.Annotations.RemoveAllAnnotationsForPage(0) ' remove all annotations on page 1, annotation3 index becomes 0.
' Edit a single annotation with specified index
pdf.Annotations(0).Title = "new title for annotation 3"
pdf.Annotations(0).Contents = "This is new comment content of annotation 3"
' Remove all annotations on the document
pdf.Annotations.Clear()
pdf.SaveAs("existing.pdf")
