ow I need to know is there any Event which is fired when the Check status of the checkbox in DateTimePicker is Changed?
but the process you have told is known to me
I hope I didn't offend you with the explanation of basic things. Many of the new people to Visual Basic don't yet know some of these and it helps them to learn how to look up information instead of relying on others.
I have gone through all the events provided in that drop down but could not found any relevant event
Then you have learned for yourself that while the DTP has a checkbox, and has an "IsChecked" property it has no "CheckChanged" event.
You could create your own control by inheriting from the DTP and adding a timer to check the IsChecked property and raise an event when it changes.
Personally I see it as a big oversight on the part of MS. This same problem exists in a couple other controls that have a checkbox but don't have an event for it.
Alternatively you could just put a checkbox control next to your DTP and use that.