class Program
    {
        static void Main(string[] args)
        {
            CreateWordprocessingDocument("Create a word processing document.doc");
        }
        public static void CreateWordprocessingDocument(string filepath)
        {
            // Create a document by supplying the filepath. 
            using (WordprocessingDocument wordDocument =
                WordprocessingDocument.Create(filepath, WordprocessingDocumentType.Document))
            {
                // Add a main document part. 
                MainDocumentPart mainPart = wordDocument.AddMainDocumentPart();

                // Create the document structure and add some text.
                mainPart.Document = new Document();
                Body body = mainPart.Document.AppendChild(new Body());
                Paragraph para = body.AppendChild(new Paragraph());
                Run run = para.AppendChild(new Run());
                run.AppendChild(new Text("Create text in body - CreateWordprocessingDocument"));
            }
        }
    }

class Program
    {
        static void Main(string[] args)
        {
            Document doc = new Document();
            DocumentBuilder builder = new DocumentBuilder(doc);

            builder.Writeln("Hello World!");

            doc.Save("Create word processing document.docx");
        }
    }