Calling VB.NET CodeBehind From a Javascript on ASP.NET webpage

[johnc]

Hey all, just wondering if the subject of this post is possible. I
have a javascript on my asp page that detects browser onunload, and it
will successfully popup a messsage box. When I try to call a sub in my
codebehind, the sub never fires, and I receive no errors.

I've also tried unsuccessfully to take advantage of the application_end
and session_end sub's in the global.asax, but neither would work
correclty.

In case it matters, the sub in my codebehind simply queries an sql
database, and emails the information to my sales dept.

Thanks!

 

[Dragon]

Hi,

Hey all, just wondering if the subject of this post is possible. I
have a javascript on my asp page that detects browser onunload, and it
will successfully popup a messsage box. When I try to call a sub in my
codebehind, the sub never fires, and I receive no errors.

You can't call a serverside sub in your client JS/VBS. Remember that at
the point client scripts execute, there's already no codebehind, and no
serverside code, so you just can't call them.

Maybe, you could open a pop-up window in unload event with some server
page, and execute your proc in it, but to my mind, it isn't a good idea.

Roman