private void btnSave_Click(object sender, EventArgs e)
        {
            dlgSaveProject.FileName = ProjectName;
            DialogResult dlg = dlgSaveProject.ShowDialog();

            if (dlg != DialogResult.OK)
            {
                return;
            }
            PA.Notes    = eNotes.Text;
            PA.ImageStr = FileUtil.ImageToBase64(imageReference.Image);
            SetText(dlgSaveProject);
            string filename = dlgSaveProject.FileName;

            if (PermutationArray.SaveToFile(filename, PA))
            {
                MessageBox.Show(filename + " is saved", Analyzer.ProgramName);
            }
        }