Microsoft.Office.Interop.Word.Application app = new Microsoft.Office.Interop.Word.Application();
object nullobj = System.Reflection.Missing.Value;
object file = openFileDialog1.FileName;
Microsoft.Office.Interop.Word.Document doc = app.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);
doc.ActiveWindow.Selection.WholeStory();
doc.ActiveWindow.Selection.Copy();
IDataObject data = Clipboard.GetDataObject();
string text = data.GetData(DataFormats.Text).ToString();
textBox2.Text = text;
doc.Close(ref nullobj, ref nullobj, ref nullobj);
app.Quit(ref nullobj, ref nullobj, ref nullobj);
But not have page number how to ?