Calendar

This code adopts a non-typical VB approach to building a calendar; e.g. it clearly and cleanly shows the logic in arriving at a leap year (with this, you can easily translate the code into other languages). The calendar covers months between Year 1899 to Year 2101. A user can change Month and/or Year from the respective dropdown lists or by clicking the increment/decrement buttons next to them. To-day's date is always marked with a different background color. User can mark a particular date by clicking on it and the marked date remains even after changing the month pages