reading doc files to richtext box

Hi,

Do the following steps.

1. first add reference to "Microsoft Word Object Library"
2. add following line at top in the code file
using System.IO;
using Microsoft.Office.Interop;
3. Now add following code in your code file (I have write this code on button click)

private void btnLoadFile_Click(object sender, EventArgs e)
        {
            string str;
          
            OpenFileDialog openfiledg = new OpenFileDialog();
            openfiledg.Filter = "Word Document (*.doc)|*.doc|Text File (*.txt)|*.txt|All Files (*.*)|*.*";
            openfiledg.FilterIndex = 2;
            openfiledg.RestoreDirectory = true;
            if ((openfiledg.ShowDialog() == DialogResult.OK && openfiledg.FileName.Length > 0))
            {
               

                IDataObject Data1;
                object nullobj, file;
                Microsoft.Office.Interop.Word.Document wordDoc;
                Microsoft.Office.Interop.Word.ApplicationClass WordApp = new Microsoft.Office.Interop.Word.ApplicationClass();
                nullobj = System.Reflection.Missing.Value;
                file = openfiledg.FileName;
                wordDoc = WordApp.Documents.Open(ref file, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj);
               
                wordDoc.ActiveWindow.Selection.WholeStory();
                wordDoc.ActiveWindow.Selection.Copy();
                Data1 = Clipboard.GetDataObject();
                str = Data1.GetData(DataFormats.Rtf).ToString();
                richTextBox1.Rtf = str;
                wordDoc.Close(ref nullobj, ref nullobj, ref nullobj);
            }

I got this code from following link:
http://bytes.com/groups/net-c/522560-load-word-file-html-file-into-richtextbox

Hope it will solve your problem.

Regards,

Swapnil.