private void Dfs0()
        {
            FileInfo fi = new FileInfo(textBoxFile10.Text);

            if (!fi.Exists)
            {
                richTextBoxStatus.Text = "File [" + fi.FullName + "] does not exist.\r\n";
                return;
            }

            using (DFS0 dfs0 = new DFS0(fi))
            {
                dfs0.CSSPDHIChanged += CSSPDHIChanged;
                dfs0.ReadFile();
                dfs0.CSSPDHIChanged -= CSSPDHIChanged;
            }
        }