I now have a, b two page, a page is loaded the ocx and have links to jump to b, b page no ocx but also have a link to jump to a page, when after open the page and click on the link to b, check the ie process module, ocx is still in, if from b and hop back into a time would be a mistake, now is the original page ocx instance is not released, but jump back a page object instantiation ocx again, how can I detected in ocx page jump, and release resources? When I tested the page jump Ocx Ondestory method is not called,