using System;

using System.Buffers;

using System.Collections;

using System.Collections.Concurrent;

using System.Diagnostics;

using System.Dynamic;

using System.IO;

using GemBox.Pdf;

​

public class Program

{

    public static void Main()

    {

        MemoryStream DoPDFMemoryStream()

        {

            using var document = new PdfDocument();

            var memoryStream = new MemoryStream();

            document.Save(memoryStream, new GemBox.Pdf.PdfSaveOptions());

            memoryStream.Seek(0, SeekOrigin.Begin);

            return memoryStream;

        }

​

        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        var stream = DoPDFMemoryStream();

        Console.Write(stream.Length);

    }

}