To change Calendar header month based on drop down list value

Question

Hi,
I'm having calendar control and dropdownlist. In calendar itself having pre and next month option. While click on per or next month loading value in each cell.  Thsi is working fine. I'm having one more dropdownlist.  In drop down list having list of month.The same needs to be happen while selecting  any month from dropdown and click on button. But its not working. I'm using MVP pattern. Can anyone help me........

Revathi.