I have seen threads on many sites regarding extending the gridview control so obviously this will be a duplicate. But I haven't found any that truly extend the control to the extent that you could have custom sorting (with header images), filtering by putting drop downs or textboxes in header columns (on a column by column basis) and custom paging (one that doesn't return all records but just returns the ones requested for the given page).

Are there any good tutorials that show the inner-workings of the gridview and how to override the proper functions? I've seen several snippets here and there but none seem to really work and explain things well.

Any links would be appreciated. Thanks!