[Solved] MasterPage AjaxManager and Javascript

[Per Mangseth]

Hi!

I have a page built up with a master page and then contentpages. The AjaxManager resides in the MasterPage.

Here's the problem: I am using RadWindow in one of the contentpages, and in the CallBackFunction of the window I want to rebind a grid in the same contentpage. From what it seems, this would have been an easy task if I had the AjaxManager in the contentpage, though, as I mentioned, that is not the case here.

As it is not possible to send an AjaxRequest to an AjaxManagerProxy, how can the task described above be achieved?

To clarify the problem: I want to rebind a grid in a contentpage through a Javascript in the aspx file, and the AjaxManager resides in the MasterPage.

Cheers,
Erlend Haukland

[Steve]

Hi Per Mangseth,

You can get the RadAjaxManager instance in the MasterPage like this:

$find("<%= RadAjaxManager.GetCurrent(Page).ClientID %>").ajaxRequest("args");

and then handle the AjaxRequest eventhandler and do the necessary changes.

Regards,
Steve
the Telerik team

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[Per Mangseth]

That did the trick! Works perfectly now.

Cheers,
Erlend Haukland

[Jeff]

I am trying to do the same thing and running into the same problem. Would it be possible for you to elaborate or provide some sample code on how you used GetCurrent to solve the issue.

Thanks.

[Jeff]

Would it be possible for you to elaborate with some sample code. I still cannot get this to work.

Thanks

[Konstantin Petkov]

Hello Jeff,

Please, review the help article about the RadAjaxManager in MasterPage scenario. Please, elaborate more on your case if you need further assistance.

Regards,
Konstantin Petkov
the Telerik team

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[Jeff]

I did look at that page it was really not very helpful there are two code snippets which don;t really tell me hpw to get it to work. 

Here is one. where is this supposed to go? how does it help me rebind thee grid?

     RadAjaxManager.GetCurrent(Page)

here is the second one what is "content"? How does this trigger the codebehind logic to rebind the grid?:

<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
        <script type="text/javascript">
            function myContentClickHandler()
            {
                $find("<%= RadAjaxManager.GetCurrent(Page).ClientID %>").ajaxRequest("content");
            }
        </script>
    </telerik:RadCodeBlock>


I have this in the code behind:

Protected Sub RadAjaxManager1_AjaxRequest(ByVal sender As Object, ByVal e As AjaxRequestEventArgs)

If e.Argument = "Rebind" Then

RadGrid4.MasterTableView.SortExpressions.Clear()

RadGrid4.MasterTableView.GroupByExpressions.Clear()

RadGrid4.Rebind()

ElseIf e.Argument = "RebindAndNavigate" Then

RadGrid4.MasterTableView.SortExpressions.Clear()

RadGrid4.MasterTableView.GroupByExpressions.Clear()

RadGrid4.MasterTableView.CurrentPageIndex = RadGrid1.MasterTableView.PageCount - 1

RadGrid4.Rebind()

End If

End Sub

How do I wire this to the ajaxrequest event?

[Konstantin Petkov]

Hello Jeff,

Looking at your code-behind, it seems you just need to pass the appropriate argument (like "Rebind") so that the code execution will pass through the Grid Rebind logic. The ajaxRequest method client--side trigger a custom request which is handled through the AjaxRequest event server-side. You can find more information regarding the RadAjax client-side API here.

Greetings,
Konstantin Petkov
the Telerik team

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[Per Mangseth]

I'm using this function. :

function CallBackFunction(radWindow, returnValue)
{
    $find("<%= RadAjaxManager.GetCurrent(Page).ClientID %>").ajaxRequestWithTarget('<%= RadGrid1.UniqueID %>', '');;
}

This is called when a RadWindow closes. I then have a RadAjaxManagerProxy like this:

<telerik:RadAjaxManagerProxy runat="server" ID="amProxy">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="RadGrid1">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="lpAjaxGrid" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManagerProxy>

This rebinds my grid. So the trick for me was to use the ajaxRequestWithTarget, and then declare the control to be updated in the AjaxManagerProxy.

Cheers,
Erlend Haukland