public static void Instance() {
            OpenFileDialog OpenDlg = new OpenFileDialog();
            OpenDlg.DefaultExt = ".xml";
            OpenDlg.Filter = "Xml Files|*.xml";

            if (OpenDlg.ShowDialog() == true) {
                ImportWindow NewForm = new ImportWindow();

                try {
                    NewForm.MediaList.DisplayData(NewForm.business.ImportPreview(OpenDlg.FileName));
                } catch {
                    MessageBox.Show("Cannot load file.", "Result");
                    return;
                }

                SessionCore.Instance.Windows.Show(NewForm);
            }
        }
        public static void Instance()
        {
            OpenFileDialog OpenDlg = new OpenFileDialog();

            OpenDlg.DefaultExt = ".xml";
            OpenDlg.Filter     = "Xml Files|*.xml";

            if (OpenDlg.ShowDialog() == true)
            {
                ImportWindow NewForm = new ImportWindow();

                try {
                    NewForm.MediaList.DisplayData(NewForm.business.ImportPreview(OpenDlg.FileName));
                } catch {
                    MessageBox.Show("Cannot load file.", "Result");
                    return;
                }

                SessionCore.Instance.Windows.Show(NewForm);
            }
        }