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[Solved] ContextMenus and ServerSideCallback

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answered on 02 Jan 2008, 07:54 AM

AJAXEnabledWebSite35.zip

Hi ashalan,

I prepared a small and running project for you that shows ContextMenus working with nodes added via ServerSideCallBack. Attached, please find the files. Download them and give them a go.

Hope this helps.

Regards,
Nick
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

answered on 03 Jan 2008, 08:19 AM

Thanks a lot for the demo projekt. Unfortunately, it is still not working.

What you did was adding a context menu to declaratively defined nodes:

    
            <telerik:RadTreeView  
        
                            ID="RadTreeView1"  
        
                            runat="server"  
        
                            LoadingStatusPosition="BeforeNodeText" OnContextMenuItemClick="RadTreeView1_ContextMenuItemClick" OnNodeExpand="RadTreeView1_NodeExpand"> 
        
                            <Nodes> 
        
                                <telerik:RadTreeNode runat="server" ExpandMode="ServerSideCallBack" Text="Root RadTreeNode 1" ContextMenuID="ContextMenu1"> 
        
                                </telerik:RadTreeNode> 
        
            etc ...

However, if you add a node inside the the OnNodeExpand event handler, it won't work. Try the following code and you will notice how the context menu IS displayed for the node that was added declaratively, but not working for any node added via ServerSideCallback.

ASPX Code Snippet

    
                    <telerik:radtreeview id="RadTreeView1"  
        
                        runat="server"  
        
                        OnNodeExpand="RadTreeView1_NodeExpand1"  
        
                        CausesValidation="False"   
        
                        EnableViewState="True"  
        
                        PersistLoadOnDemandNodes="False" > 
        
                        <CollapseAnimation Duration="1" Type="Linear" /> 
        
                        <ExpandAnimation Duration="1" Type="Linear" /> 
        
                        <Nodes> 
        
                            <telerik:RadTreeNode runat="server" ExpandMode="ServerSideCallBack" Text="TestNode" ContextMenuID="ctmFindRefresh"></telerik:RadTreeNode> 
        
                        </Nodes> 
        
                        <ContextMenus> 
        
                            <telerik:RadTreeViewContextMenu ID="ctmFindRefresh" runat="server"> 
        
                                <Items> 
        
                                    <telerik:RadMenuItem Text="Item1"></telerik:RadMenuItem> 
        
                                    <telerik:RadMenuItem Text="Item2"></telerik:RadMenuItem> 
        
                                </Items> 
        
                            </telerik:RadTreeViewContextMenu> 
        
                        </ContextMenus> 
        
                    </telerik:radtreeview>

Code Behind:

    
                    protected void RadTreeView1_NodeExpand1(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e) 
        
                    { 
        
                        RadTreeNode newnode = new RadTreeNode(); 
        
                        newnode.Text = "New Node"; 
        
                        newnode.ContextMenuID = "ctmFindRefresh"; 
        
                        newnode.ExpandMode = TreeNodeExpandMode.ServerSideCallBack; 
        
                        e.Node.Nodes.Add(newnode); 
        
                    }