Filter grid view content by drop down lists on another page

Hi,
I have two drop down lists on one aspx page (month and year) and I have a grid view on another aspx page.
I am trying to control the content of the grid view based on the drop down list selection on the other page.

Does anyone know how this can be achieved?

I can filter the grid view content by drop down lists when the two features are on the same page but not when they are on seperate pages.

Thank you for your help in advance.