Sunag.SEA3D.SEA3DAssimp.OpenSaveFileDialog C# (CSharp) Method

        private void OpenSaveFileDialog()
        {
            string filename = null;

            try
            {
                OpenFileDialog openFileDialog = new OpenFileDialog();
                openFileDialog.RestoreDirectory = true;

                if (openFileDialog.ShowDialog() == DialogResult.OK)
                {
                    filename = openFileDialog.FileName;
                }
            }
            catch (Exception e)
            {
                MessageBox.Show("Error opening the file:" + Environment.NewLine + e.ToString());
            }

            if (filename != null)
            {
                Import(filename);
                SaveDialog();
            }
        }