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Change a PDF Page's MediaBox in C#

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Sample C# code for using PDFTron SDK to change a page's MediaBox using Rect class. Learn more about our C# PDF Library and PDF Editing & Manipulation Library.

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//
// Copyright (c) 2001-2020 by PDFTron Systems Inc. All Rights Reserved.
//

using System;
using pdftron;
using pdftron.Common;
using pdftron.Filters;
using pdftron.SDF;
using pdftron.PDF;

namespace RectTestCS
{
	/// <summary>
	/// Summary description for Class1.
	/// </summary>
	class Class1
	{
		private static pdftron.PDFNetLoader pdfNetLoader = pdftron.PDFNetLoader.Instance();
		static Class1() {}
		
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main(string[] args)
		{
			PDFNet.Initialize();
			// Relative path to the folder containing test files.
			string input_path =  "../../../../TestFiles/";
			string output_path = "../../../../TestFiles/Output/";

			Console.WriteLine("_______________________________________________");
			Console.WriteLine("Opening the input pdf...");

			try // Test  - Adjust the position of content within the page.
			{
				using (PDFDoc input_doc = new PDFDoc(input_path + "tiger.pdf"))
				{
					input_doc.InitSecurityHandler();

					Page pg = input_doc.GetPage(1);
					Rect media_box = pg.GetMediaBox();

					media_box.x1 -= 200;	// translate the page 200 units (1 uint = 1/72 inch)
					media_box.x2 -= 200;

					media_box.Update();	

					input_doc.Save(output_path + "tiger_shift.pdf", 0);
				}

				Console.WriteLine("Done. Result saved in tiger_shift...");
			}
			catch (PDFNetException e)
			{
				Console.WriteLine(e.Message);
			}

		}
	}
}
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