load word file (.docx) in richtextbox

Question

I was already able to load a .docx file into my wpf application but it doesn\'t seem to show up in my richtextbox:

if (openFile.ShowDialog() == true)
{
     // O         


        

Answer 1

 if (openFile.ShowDialog() == true)
        {
            // Open document 
            string originalfilename = System.IO.Path.GetFullPath(openFile.FileName);

            if (openFile.CheckFileExists && new[] { ".docx", ".doc", ".txt", ".rtf" }.Contains(Path.GetExtension(originalfilename).ToLower()))
            {
                Microsoft.Office.Interop.Word.Application wordObject = new Microsoft.Office.Interop.Word.Application();
                object File = originalfilename;
                object nullobject = System.Reflection.Missing.Value;
                Microsoft.Office.Interop.Word.Application wordobject = new Microsoft.Office.Interop.Word.Application();
                wordobject.DisplayAlerts = Microsoft.Office.Interop.Word.WdAlertLevel.wdAlertsNone;
                Microsoft.Office.Interop.Word._Document docs = wordObject.Documents.Open(ref File, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject, ref nullobject);
                docs.ActiveWindow.Selection.WholeStory();
                docs.ActiveWindow.Selection.Copy();
                rtfMain.Document.Paste();
                docs.Close(ref nullobject, ref nullobject, ref nullobject);
                wordobject.Quit(ref nullobject, ref nullobject, ref nullobject);


                MessageBox.Show("file loaded");
            }
        }