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Ajax Manager Event Filter

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Ajax

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Nicholas Walker asked on 27 Jul 2008, 03:07 AM

I am trying to do the below:

            <telerik:AjaxSetting AjaxControlID="TreePane" EventName="NodeClick">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="TreePane" />
                    <telerik:AjaxUpdatedControl ControlID="pnlMaintain" LoadingPanelID="apnlMain" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="TreePane" EventName="NodeDrop">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="TreePane" />
                </UpdatedControls>
            </telerik:AjaxSetting>

So only the NodeClick event of a TreeView control will update the pnlMaintain control. However, the control is updated no matter what event is executed. It seems like this should work, but it does not.

22 Answers, 1 is accepted

answered on 06 Oct 2009, 01:40 PM

I too am experiencing an issue like this I have:

<telerik:RadAjaxManager runat="server" DefaultLoadingPanelID="radAjaxPanel">

<telerik:AjaxSetting AjaxControlID="radtreeFolders" EventName="NodeClick">

<telerik:AjaxUpdatedControl ControlID="radGridMail" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="radtreeFolders" EventName="ContextMenuItemClick">

<telerik:AjaxUpdatedControl ControlID="radtreeFolders" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>
However, both the tree and the grid refresh regardless of what event is fired. Is there any ETA on this? It's really causing issues. I have Q2 2009 SP1 installed.

answered on 06 Oct 2009, 01:59 PM

I did figure out a work around for this. I simply modify the list of updated controls with javascript. For example I want pnlMaintain to refresh on "NodeClick" and not on "NodeDrop".   Saw a bunch of people having the problem, so I wanted to contribute.

In Node Click:

    function onTreeViewNodeClicked(sender, eventArgs) {
        var ajaxManager = $find("<%= RadAjaxManager1.ClientID %>");
        if (ajaxManager != null) {
            var settings = ajaxManager.get_ajaxSettings();
            for (setting in settings) {
                var initiatingControl = settings[setting].InitControlID;
                var controls = settings[setting].UpdatedControls;
                if (initiatingControl == '<%= TreePane.ClientID %>') {
                    for (control in controls) {
                        if (controls[control].ControlID == 'pnlMaintainOff') {
                            controls[control].ControlID = '<%= pnlMaintain.ClientID %>';
                        }
                    }
                }

            }

            ajaxManager.set_ajaxSettings(settings);
        }
    }

In Node Drop:

    function onTreeViewNodeDrop(sender, eventArgs) {
        var ajaxManager = $find("<%= RadAjaxManager1.ClientID %>");
        if (ajaxManager != null) {
            var settings = ajaxManager.get_ajaxSettings();
            for (setting in settings) {
                var initiatingControl = settings[setting].InitControlID;
                var controls = settings[setting].UpdatedControls;
                if (initiatingControl == '<%= TreePane.ClientID %>') {
                    for (control in controls) {
                        if (controls[control].ControlID == '<%= pnlMaintain.ClientID %>') {
                            controls[control].ControlID = 'pnlMaintainOff';
                        }
                    }
                }

            }

            ajaxManager.set_ajaxSettings(settings);
        }

    }

answered on 25 Oct 2010, 01:38 PM

Hi David,

We will mark the EventName property as obsolete for the next version of the RadAjax control.
The issue with it cannot be fixed because due to the RadAjax implementation the update panels wrapped around the updated controls by RadAjax are added too late, after the event with the specified name has finished. Thus the AsyncPostBackTrigger which is listening for the event will never update the page content as the event where the content should be updated has already passed.

Greetings,
Iana
the Telerik team

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