CadEditor.EditMap.saveMap C# (CSharp) Метод

        private void saveMap()
        {
            byte[] x;
            int nn = MapConfig.saveMap(mapData, out x);

            //
            try
            {
                if (sfSaveDialog.ShowDialog() == DialogResult.OK)
                {
                    var fname = sfSaveDialog.FileName;
                    using (FileStream f = File.OpenWrite(fname))
                        f.Write(x, 0, (int)nn);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }