Date Picker , how to restrict

I am using CalendarXP 9.0开发者_C百科 Calendar, In this how to restrict user to select only last day of the month.

Thanks in advance

I'm not very familiar with that tool, but it sounds like the functionality you essentially want is a month picker as opposed to a date picker. They seem to have some drop-down based samples as well as a "whole month" selection option in their demos. What you want may be in there somewhere.

Basically, the approach you may end up taking would be to allow the user to select only a particular month (not even show them dates), or to allow them to select anything but set the date to the end of the month programmatically.