private void btnSave_Click(object sender, RoutedEventArgs e)
        {
            AppoinmnetPage appoinmnetPage = new AppoinmnetPage(conNum);
            Channel_Doc    _DOC           = new Channel_Doc();

            _DOC.MainFrame         = null;
            _DOC.MainFrame.Content = appoinmnetPage;
        }
        private void btnGO_Click(object sender, RoutedEventArgs e)
        {
            int contact = Convert.ToInt32(txtContact.Text);

            BIZ.Patient p = db.Patient.Where(ps => ps.Contact == contact).FirstOrDefault();
            if (p != null)
            {
                AppoinmnetPage appoinmnetPage = new AppoinmnetPage(p.Contact);
                MainFrame.Content = appoinmnetPage;
                //Functions functions = new Functions(p.Contact);
                //MainFrame.Content = functions;
            }
            else
            {
                if (MainFrame.Content != null)
                {
                    MainFrame.Content = null;
                }
                MessageBox.Show("Invalid Contact Number. Please Register First.");
            }
        }