using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
//using Word = Microsoft.Office.Interop.Word;
using System.Reflection;
using System.IO;
 
...
....
....
 
		//
		private void button1_Click(object sender, System.EventArgs e)
		{
			object oMissing = System.Reflection.Missing.Value;
			object oEndOfDoc = "\\endofdoc"; /* \endofdoc is a predefined bookmark */
 
			//Start Word and create a new document.
			Word._Application oWord;
			Word._Document oDoc;
			oWord = new Word.Application();
			oWord.Visible = true;
			oDoc = oWord.Documents.Add(ref oMissing, ref oMissing,
				ref oMissing, ref oMissing);
 
			//Insert a paragraph at the beginning of the document.
			Word.Paragraph oPara1;
			oPara1 = oDoc.Content.Paragraphs.Add(ref oMissing);
			oPara1.Range.Text = "Heading 1";
			oPara1.Range.Font.Bold = 1;
			oPara1.Format.SpaceAfter = 24;    //24 pt spacing after paragraph.
			oPara1.Range.InsertParagraphAfter();
 
			//Insert a paragraph at the end of the document.
			Word.Paragraph oPara2;
			object oRng = oDoc.Bookmarks.get_Item(ref oEndOfDoc).Range;
			oPara2 = oDoc.Content.Paragraphs.Add(ref oRng);
			oPara2.Range.Text = "Heading 2";
			oPara2.Format.SpaceAfter = 6;
			oPara2.Range.InsertParagraphAfter();
		}
 
		}
	}