Write data to Word document using .NET

using System;
using Microsoft.Office.Interop.Word;

namespace WordDocWriterExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // Define the Word document path and name
            string filePath = @"C:\Users\UserName\Documents\example.docx";

            // Define the data to be written to the Word document
            string data = "Hello, world!";

            // Create a new instance of Word application
            Application wordApp = new Application();

            // Open the Word document
            Document wordDoc = wordApp.Documents.Open(filePath);

            // Set the cursor position to the end of the document
            object missing = System.Reflection.Missing.Value;
            object endOfDoc = "\\endofdoc";
            Range range = wordDoc.Bookmarks.get_Item(ref endOfDoc).Range;

            // Write the data to the Word document
            range.Text = data;

            // Save and close the Word document
            wordDoc.Save();
            wordDoc.Close();

            Console.WriteLine("Data has been written to the Word document.");
            Console.ReadLine();
        }
    }
}