asp.net ajax server side event handling on client

[Rodney]

I want to notify browser of every time my server side event fires w/o
creating some sort of timer on client. Basically, can server notify
client w/o client initiating contact? Again, thx for any information
you can provide.

 

[Arsen V.]

Hi Rodney,

HTTP protocol does not allow the server to "push" to the client. The client
always has to be the one initiating the request.

Ajax allows to simulate "push" by having the client "poll" the server when
certain client side events occur: mouseover, timer tick, click, etc.

Java Applets, ActiveX, or Flash can be used to "push" from server to client.

-AV