Complete code
using System;
using SautinSoft.Pdf;
using System.IO;
using SautinSoft.Pdf.Content;
using SautinSoft.Pdf.Annotations;
class Program
{
/// <summary>
/// Watermarks.
/// </summary>
/// <remarks>
/// Details: https://sautinsoft.com/products/pdf/help/net/developer-guide/link-annotations.php
/// </remarks>
static void Main()
{
// Before starting this example, please get a free 30-day trial key:
// https://sautinsoft.com/start-for-free/
// Apply the key here:
// PdfDocument.SetLicense("...");
using (var document = new PdfDocument())
{
// Add a page.
var page = document.Pages.Add();
using (var formattedText = new PdfFormattedText())
{
// Set font family and size.
// All text appended next uses the specified font family and size.
formattedText.FontFamily = new PdfFontFamily("Calibri");
formattedText.FontSize = 12;
formattedText.AppendLine("Hello World");
// Reset font family and size for all text appended next.
formattedText.FontFamily = new PdfFontFamily("Times New Roman");
formattedText.FontSize = 14;
formattedText.FontStyle = PdfFontStyle.Italic;
formattedText.Color = PdfColor.FromRgb(1, 0, 0);
formattedText.AppendLine(" This message was ");
// Set font style and color for all text appended next.
formattedText.FontFamily = new PdfFontFamily("Archi");
formattedText.FontSize = 18;
formattedText.Append("created by SautinSoft");
// Reset font style and color for all text appended next.
formattedText.FontStyle = PdfFontStyle.Normal;
formattedText.Color = PdfColor.FromRgb(0, 0, 0);
formattedText.Append(" component!");
// Set the location of the bottom-left corner of the text.
// We want top-left corner of the text to be at location (100, 100)
// from the top-left corner of the page.
// NOTE: In PDF, location (0, 0) is at the bottom-left corner of the page
// and the positive y axis extends vertically upward.
double x = 100, y = page.CropBox.Top - 100 - formattedText.Height;
// Draw text to the page.
page.Content.DrawText(formattedText, new PdfPoint(x, y));
//Find text "SautinSoft" and add Link annotations...
var text = page.Content.GetText().Find("SautinSoft");
foreach (var item in text)
{
var link = page.Annotations.AddLink(item.Bounds.Left, item.Bounds.Bottom, item.Bounds.Width, item.Bounds.Height);
link.Actions.AddOpenWebLink("https://sautinsoft.com/");
}
}
document.Save("Writing.pdf");
}
System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo("Writing.pdf") { UseShellExecute = true });
}
}
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