Multiple Word Documents Concurrent Updating in C#

concurrent-processing-documents.cs

// Concurrently updating three documents using <a href="https://www.nuget.org/packages/Openize.Words">Openize.Words</a>

            var task1 = System.Threading.Tasks.Task.Run(()
                => ManipulateDocument("doc1.docx", "doc1_Threaded.docx"));
            var task2 = System.Threading.Tasks.Task.Run(()
                => ManipulateDocument("doc2.docx", "doc2_Threaded.docx"));
            var task3 = System.Threading.Tasks.Task.Run(()
                => ManipulateDocument("doc3.docx", "doc3_Threaded.docx"));

            // Wait for all tasks to complete
            System.Threading.Tasks.Task.WaitAll(task1, task2, task3);

            Console.WriteLine("All tasks completed.");

            static void ManipulateDocument(string inputFileName, string outputFileName)
            {
                var doc = new Openize.Words.Document(inputFileName);
                var paragraph = new Openize.Words.IElements.Paragraph();
                paragraph.AddRun(new Openize.Words.IElements.Run
                {
                    Text = $"This is the paragraph appended to {inputFileName}"
                });

                var body = new Openize.Words.Body(doc);
                body.AppendChild(paragraph);

                doc.Save(outputFileName);
                Console.WriteLine($"Task completed for {inputFileName}");
            }