asp.net clear mode window Data caching operation method _ practical skills

Using the modal window ShowModalDialog () pop-up page is often used in asp.net
The most use is to click the "Modify" button, pop-up modify the page, after the successful modification, close the Modify page, refresh the parent page.
At present, a problem is, after refreshing the parent page, and then click the Modify button pop-up modify page, modify the page to display the data is not modified, or the first time to change the old data page, this involves the Clear mode window cache data problem.
This involves the ShowModalDialog caching mechanism, which requires us to manually add some code to clear the cache.

The mode of operation is as follows :
First in the foreground interface (that is, the ASPX interface) code, add: <meta http-equiv= "Expires" content= "0"/><%--used to empty the cache, expires the value in the background page Page_ Assignment--%> in load function
Then in the background interface (that is, the CX interface), in the Page_Load function, if (! IsPostBack) {... Add code: Response.Expires = -1;//to empty cache
In this way, the cached data in the modal window can be erased, haha