Functions play an important role in any programming languages. It allows you to organize your code in smaller part. A function can be called repeatedly in your program and can return or not return any value.

In Visual Basic, there are many cases that we use “subs”. Sub procedure or a subroutine that does not return a value. It is commonly used piece of code which you will want to execute in various places in your program. Using this subroutine, you can minimize your code and find it easy to debug if something went wrong with your program.

On using Visual Basic, one of the most common control used to display a Date and Time is DateTimePicker, DateTimePicker is just like a combobox. If you click a dropdown arrow it displays a month calendar. And using this control it allows you to select Date and Time by modifying the format properties of this control. This time let’s create a new project called “DateTimePicker”. Then add four DateTimePicker and button control from the toolbox.