Ajax updating controls when it is not supposed to

[Kevin Cauchi]

Hi there,

I have a timer that updates a grid on a condition. For example:

if (IsDifferentFilter())
{
         //Load logs method is called so the datagrid will be updated
         Thread logsThread = new Thread(new ThreadStart(LoadLogs));
         logsThread.Start();
         logsThread.Join();
}
//else the datagrid will NOT be updated

The issue here is that even though the datagrid is NOT updated, it still gets refreshed. When I say refeshed i mean its just the datagrid not the whole page.

The grid is ajaxisfied using:

<telerik:RadAjaxManagerProxy ID="radAjaxManagerProxyLogs" runat="server" >
    <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="tmrAutoFilter">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl ControlID="dgLogs" />
            </UpdatedControls>
        </telerik:AjaxSetting>
        <telerik:AjaxSetting AjaxControlID="dgLogs">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl ControlID="dgLogs" LoadingPanelID="ldgBar" />
            </UpdatedControls>
        </telerik:AjaxSetting>
    </AjaxSettings>
</telerik:RadAjaxManagerProxy>

Any help would be appreciated.

Thanks

K

Edited (Nov-21-2011): I realized the OnInit code is being triggered after each timer tick as well. That is not normal is it

[Mira]

Hello Kevin,

The described behavior is expected because the RadAjaxManager wraps the updated controls in update panels with UpdateMode="Conditional".
You can examine the ASP.NET Page Life Cycle to see why the OnInit is triggered.

I hope this helps.

Greetings,
Mira
the Telerik team

[Kevin Cauchi]

Thanks for your reply.

Just to be 100% sure..:

So there is no work around updating controls when their values aren't updated. Correct?
.. meaning, if i have a drop down list in an Ajax panel and the drop down list is currently open, the DDL will be closed when it is time to be refreshed...

[Mira]

Hello Kevin,

You are indeed right - the described behavior is expected due to the way the MS AJAX framework works.

Best wishes,
Mira
the Telerik team