public override void HideDropDown(HideCloseReason reason)
{
if (!dropdown.IsClosed)
{
if (reason == HideCloseReason.AppFocusChange || reason == HideCloseReason.Keyboard)
{
dropdown.CloseDropdown(false);
}
else
{
dropdown.CloseDropdown(true);
}
}
base.HideDropDown(reason);
}