Xamarin Forms DatePicker Cancel Button/Event

Hi All,

I am using a Xamarin Forms DatePicker.

<DatePicker x:Name="dobDatePicker" Date="{Binding SearchDate}"
                VerticalOptions="EndAndExpand"
                HorizontalOptions="FillAndExpand"
                IsVisible="false">
      </DatePicker>

To show the DatePicker, i am calling,

dobDatePicker.Focus();

Once the DatePicker is shown, if i press BACK, how can i access this event?

Thanks.

Regards,
Manoj