Opening ms word screen when using word.document.close funtion

string str = Server.MapPath(FileUpload1.FileName);
               string ext = System.IO.Path.GetExtension(str);
               FileUpload1.SaveAs(Server.MapPath("Bin\\") + FileUpload1.FileName);
               string p = Server.MapPath("Bin\\") + FileUpload1.FileName;
 Microsoft.Office.Interop.Word.Application word = new Microsoft.Office.Interop.Word.Application();
                    object missing = System.Reflection.Missing.Value;
                    //object path = @str;
                    object path = @p;
                    object readOnly = false;
                    Microsoft.Office.Interop.Word.Document doc = word.Documents.Open
                        (
                        ref path,
                        ref missing,
                        ref readOnly,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing,
                        ref missing
                        );
                    string text = "";
                    for (int i = 0; i < doc.Paragraphs.Count; i++)
                    {
                        text += "\r\n" + doc.Paragraphs[i + 1].Range.Text.ToString();
                    }
                    TextBox1.Text = text.ToString();
                    word.Documents.Close(ref missing, ref missing, ref missing);

word.Documents.Close(ref missing, ref missing, ref missing);