Visual studio调试器仍然显示从iframe中删除的旧页面。

I use modal dialogs. A modal dialog is build up with a mask div, and a container div. The container div contains an iFrame with the modal aspx page. When the modal dialog is initialized, the mask and container are added to the page body. When I close the modal dialog, the mask and container are removed from the body. I use modal dialogs. A modal dialog is build up