The main classes available with the RadMonthYearPicker control are:
RadMonthYearPicker is the main class for the month-and-year picker control. It provides several properties, methods, and events for customizing the control which you can find at Telerik.Web.UI.RadMonthYearPicker.
RadDateInput is the class for the input area of the RadMonthYearPicker. It handles the formatting and parsing of date and time strings, and has a number of its own properties, methods and events. RadDateInput is one of the standard RadInput controls and its API is available at Telerik.Web.UI.RadDateInput.
DatePopupButton is the class for the popup button that displays the MonthYearView on RadMonthYearPicker. It is exposed by the DatePopupButton property.