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Callback - server-side response to client-side Options
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Eyal
Posted: Wednesday, December 19, 2007 4:42:03 AM
Rank: Newbie
Groups: Member

Joined: 11/26/2007
Posts: 8
Hi,

I'm using the CallbackPanel and trigger the callback with eo_Callback javascript function. The controls within the CallbackPanel are dynamically created.

The server-side code is executing well (suppose), but how can I initiate a response back to the client-side function (with specific parameters) in order to update the dynamically created control?
I appreciate if you could provide a short sample of the implementation of the server-side response initiation and the client-side after-execute function.

Thanks in advance!

Eyal
Finland
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eo_support
Posted: Wednesday, December 19, 2007 7:26:21 AM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,194
Hi,

There are a number of ways to do this. One way is to simply render a chunk of JavaScript. For example:

Code: HTML/ASPX 
<eo:CallbackPanel runat="server" id="CallbackPanel1">
    ....other contents....
    <asp:Label runat="server" id="lblScript"></asp:Label>
</eo:CallbackPanel>


On the server side, you can do:

lblScript.Text = "<script type=\"text/javascript\">window.alert('hi!');</script>";

Once this code is executed, the CallbackPanel will execute the JavaScript you rendered (in this case window.alert('hi!');).

Thanks
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Eyal
Posted: Thursday, December 20, 2007 1:05:09 AM
Rank: Newbie
Groups: Member

Joined: 11/26/2007
Posts: 8
Good point. Thanks! Applause

Quote:
There are a number of ways to do this.

Can you shortly elaborate on other ways?

Thanks again!
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eo_support
Posted: Thursday, December 20, 2007 5:51:29 AM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 24,194
Other ways include rendering html input element, using our CallbackPanel's ClientSideAfterExecute event handler, etc.
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