public void Show()
{
if (window == null)
{
window = new UserPreferencesForm(userPreferences);
window.FormClosed += OnWindowClosed;
}
if (window.Visible)
{
window.Focus();
}
else
{
window.ShowDialog();
}
}
private void OnWindowClosed(object sender, FormClosedEventArgs e)
{
window.Dispose();
window = null;
}
