private void OnVisible(object sender, EventArgs e)
{
if ((_ribbonDateTimePicker != null) && (_ribbonDateTimePicker.Ribbon != null))
{
PropertyDescriptor propertyVisible = TypeDescriptor.GetProperties(_ribbonDateTimePicker)["Visible"];
bool oldValue = (bool)propertyVisible.GetValue(_ribbonDateTimePicker);
bool newValue = !oldValue;
_changeService.OnComponentChanged(_ribbonDateTimePicker, null, oldValue, newValue);
propertyVisible.SetValue(_ribbonDateTimePicker, newValue);
}
}