cadencii.Preference.onAquesToneChooseButtonClicked C# (CSharp) Method

        private void onAquesToneChooseButtonClicked( System.Windows.Forms.TextBox text_box )
        {
            OpenFileDialog dialog = new OpenFileDialog();
            if (text_box.Text != "" && Directory.Exists(PortUtil.getDirectoryName(text_box.Text))) {
                dialog.SetSelectedFile(text_box.Text);
            }
            var dr = AppManager.showModalDialog( dialog, true, this );
            if ( dr == System.Windows.Forms.DialogResult.OK ) {
                String path = dialog.FileName;
                text_box.Text = path;
            }
        }