In the Date Picker control. I want year to be custom format.

For example:

In the year field i want to type 15 and press tab it should auto populate 2015.

Is it possible?

Thanks in Advance. 

Hello Monisha,

RadDatePicker control provides the possibility to modify the way the date is formatted and apply a custom format if needed. Please, check the following article from our help documentation that provides a detailed information how to achieve this:
http://docs.telerik.com/devtools/silverlight/controls/raddatetimepicker/features/formatting

For you concrete scenario you could apply the following format:

Also, the ParseExact property should be set to "True" and the DisplayFormat property to "Long":
 
Thus the date could be entered in its short format and be displayed in the long format.

We hope this will help you.

Regards,
Nasko
Telerik