Notifying Client Browser from Server in ASP.NET

[satyamguha2006]

Is there any way to notify the Client Browser when something changes
at the Server?

 

[Mark Rae [MVP]]

Is there any way to notify the Client Browser when something changes
at the Server?

When something changes...? Like what...?

 

[bruce barker]

there are a couple ways:

1) simple - poll the server with ajax
2) using iframes, and server push (really client pull). here you turn
off buffering and keep sending javascript commands and a flush. to keep
from burning up too much memory, you need to close and reopen the request.
3) use a java applet or active/x to hold a connection open and fire an
event.


-- bruce (sqlwork.com)

 

[Chris Fulstow]

Nope - sorry.

Like Bruce suggested, your best bet is to use AJAX. You can
periodically send a background web request, without refreshing the
main page, to get data from the server - maybe by calling a web
service or some other page.

This is how GMail and other web-based email clients work, they poll
the server every few seconds to see if new mail is available.

Chris

 

[Steve C. Orr [MCSD, MVP, CSM, ASP Insider]]

I also would recommend AJAX. It is the modern approach.

Here's more info along with some sample code:
http://SteveOrr.net/articles/Ajax.aspx
http://SteveOrr.net/articles/WebChat.aspx