Call back on node check. how ?

[dotnetshar net]

Very new to ajax + telerik.  I have a form with rad tree view. I have added server side event handler for NodeCheck in (code behind). The question is how should I make it call back instead of postback. Right now its a postback. 


I have a form with tree view 
 <form id="form1" runat="server">
 <telerik:RadAjaxPanel runat="server" >
            <telerik:RadPanelBar ID="RadPanelBar1" Runat="server" Height="110px">
                <Items>
                    <telerik:RadPanelItem runat="server" Text="Search by Sku" Value="SKU">         
                    
                        <Items>
                            <telerik:RadPanelItem>
                            <ContentTemplate>
                            
                                <telerik:RadTreeView   runat="server" ID="treeSku" CheckBoxes="true" OnClientNodeChecking="onNodeChecking" >                                
                                </telerik:RadTreeView>
                               
                            </ContentTemplate>
                            </telerik:RadPanelItem>
                        </Items>              
                        
                    </telerik:RadPanelItem>
                    <telerik:RadPanelItem runat="server" Text="Search by Product" Value="Product">
                    
                    </telerik:RadPanelItem>
                    
                </Items>
               
            </telerik:RadPanelBar>
            </telerik:RadAjaxPanel>
</form>

[Yana]

Hello,

I suggest you place the panelbar inside RadAjaxPanel in order to ajaxify the postback.

Regards,
Yana
the Telerik team

[dotnetshar net]

In the code  above, the panel bar is inside the ajax panel.
 can you pls explain with code sample.

[Yana]

Hello,

I'm sorry for my mistake.

You can check whether it's postback using IsAjaxRequest property of the ajax panel. In your case it's supposed to make an ajax request. Also I suggest to add RadAjaxLoadingPanel and you'll notice that not the whole page is reloaded.

Greetings,
Yana
the Telerik team