ابتدا روی پروژه کلیک راست کرده، Add Reference و اسمبلیهای زیر را را اضافه نمایید:
  • Microsoft.Office.Core
  • Microsoft.Vbe.Interop
  • Microsoft.Office.Interop.Word
سپس :
using Word = Microsoft.Office.Interop.Word;
private static object n = Type.Missing;



static void Main(string[] args)

{

    // Start Word in the background.

    Word.ApplicationClass app = new Word.ApplicationClass();

    app.DisplayAlerts = Word.WdAlertLevel.wdAlertsNone;



    // Create a new document (this is not visible to the user).

    Word.Document doc = app.Documents.Add(ref n, ref n, ref n,

      ref n);



    // Add a heading and two lines of text.

    Word.Range range = doc.Paragraphs.Add(ref n).Range;

    range.InsertBefore("Test Document");

    string style = "Heading 1";

    object objStyle = style;

    range.set_Style(ref objStyle);



    range = doc.Paragraphs.Add(ref n).Range;

    range.InsertBefore("Line one.\nLine two.");

    range.Font.Bold = 1;



    // Show a print preview, and make Word visible.

    doc.PrintPreview();

    app.Visible = true;

}
منبع : Visual C#‎ 2005 Recipes: A Problem-Solution Approach