How to open Microsoft Word from C#.net

Using this package
using Word = Microsoft.Office.Interop.Word;

private void button2_Click(object sender, EventArgs e)

{

object oMissing = System.Reflection.Missing.Value;

object oEndOfDoc = “\\endofdoc”; /* \endofdoc is a predefined bookmark */

object filename = @”E:/lakshmanan.docx”;

//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 filename , ref oMissing,

ref oMissing, ref oMissing);

//doc.Open()= “E:/lakshmanan.doc”;

Word.Range wrdRng = oDoc.Bookmarks.get_Item(ref oEndOfDoc).Range;

//Insert a paragraph at the beginning of the document.

Word.Paragraph oPara1;

oPara1 = oDoc.Content.Paragraphs.Add(ref oMissing );

oPara1.Range.Text = “MANIVANNAN”;

oPara1.Range.Font.Bold = 1;

oPara1.Range.Font.Size = 14;

//24 pt spacing after paragraph.

}