Coordinates and boundaries in PDF in C# and .Net

Working with PDF files often requires precise definition of boundaries and coordinates for various tasks such as extracting text, adding annotations or editing content. We recommend using the SautinSoft PDF .Net library, which provides powerful tools for working with PDF files. In this article, we will look at how to define boundaries and coordinates in a PDF file using C# and .Net.

Step-by-step guide:

  1. Add SautinSoft.PDF from NuGet.
  2. Load PDF Document.
  3. Specify the page number and the text to be found.
  4. Output borders and coordinates on the console.

Input file:

Output result:

Complete code

using System;
using System.IO;
using SautinSoft;
using SautinSoft.Pdf;
using SautinSoft.Pdf.Content;
using System.Linq;

namespace Sample
{
    class Sample
    {
        /// <summary>
        /// Find a specific text on page #2 in the PDF and show Bounds, Coordinates, Points.
        /// </summary>
        /// <remarks>
        /// Details: https://sautinsoft.com/products/pdf/help/net/developer-guide/bounds-and-coordinates.php
        /// </remarks>
        static void Main(string[] args)
        {
            // Before starting this example, please get a free 100-day trial key:
            // https://sautinsoft.com/start-for-free/

            // Apply the key here:
            // PdfDocument.SetLicense("...");

            string pdfFile = Path.GetFullPath(@"..\..\..\sample.pdf");

            using var document = PdfDocument.Load(pdfFile);
            // Page #2:
            var page = document.Pages[1];

            var foundText = page.Content.GetText().Find("Best Beaches:").FirstOrDefault();
            if (foundText != null)
                Console.WriteLine(foundText.Bounds);
        }
    }
}

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Option Infer On

Imports System
Imports System.IO
Imports SautinSoft
Imports SautinSoft.Pdf
Imports SautinSoft.Pdf.Content
Imports System.Linq

Namespace Sample
	Friend Class Sample
		''' <summary>
		''' Find a specific text on page #2 in the PDF and show Bounds, Coordinates, Points.
		''' </summary>
		''' <remarks>
		''' Details: https://sautinsoft.com/products/pdf/help/net/developer-guide/bounds-and-coordinates.php
		''' </remarks>
		Shared Sub Main(ByVal args() As String)
			' Before starting this example, please get a free 100-day trial key:
			' https://sautinsoft.com/start-for-free/

			' Apply the key here:
			' PdfDocument.SetLicense("...");

			Dim pdfFile As String = Path.GetFullPath("..\..\..\sample.pdf")

			Using document = PdfDocument.Load(pdfFile)
				' Page #2:
				Dim page = document.Pages(1)
	
				Dim foundText = page.Content.GetText().Find("Best Beaches:").FirstOrDefault()
				If foundText IsNot Nothing Then
					Console.WriteLine(foundText.Bounds)
				End If
			End Using
		End Sub
	End Class
End Namespace

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We are developing .Net components since 2002. We know PDF, DOCX, RTF, HTML, XLSX and Images formats. If you need any assistance with creating, modifying or converting documents in various formats, we can help you. We will write any code example for you absolutely free.