In ASP. NET Ajax, the server calls the js method.

(Referenced from BaiduArticle.

In Asp.net Ajax, you sometimes need to call a js method when processing is completed in the background to indicate that the processing has been completed or some layers have been closed. For example, if the photo masking layer is used.

However, when the updatepanel Control calls the server method and calls JS using the response. Write () method, an error is reported. If clientscript. registerstartupscript is used, it is not reflected at all.

After searching for half a day, we used the scriptmanager. registerstartupscript method to call Js.