GridView Paging when filtering using dropdownlist

Question

hi everyone,

i have a problem, i made a gridview and i am filtering the grideview content on the bases of selected content by the user from dropdownlist... i am also using paging in the gridview, it shows 10 rows at a time...now when i select the content from the dropdownlist the grideview content filters and if the filter content is more than 10 rows paging occurs...and when i click on the next page the gridview shows the content of next page but not the content of filtered grideview next page??