In the previous post I showed a class to merge PDF files using iText#, but it seems that there’s a better approach using iTextDotNet:

csharp:
using com.lowagie.tools;

class Program
{
    static void Main(string[] args)
    {
        string[] lista = new string[] { "Meijer.pdf", "P330.pdf", "result.pdf" };
        concat_pdf.main(lista);
    }
}

As you can see this is a cleaner and simpler way to merge pdf files. You can download the iTextDotNet .NET Library from this blog or the official Website.