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RadTreeView with Context Menus in RadPanelBar producing JavaScript errors

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PanelBar

This is a migrated thread and some comments may be shown as answers.

Irene asked on 30 Jul 2008, 04:11 PM

Hello,

We have a problem with RadTreeView with Context Menus running in the PanelBar. Every time menu gets repainted (right mouse click, etc.) we are getting a JavaScript error. The same tree with the same menus running outside the PadPanelBar functions fine. The Context Menus both populated in runtime and static – the same behavior.

Details:

Version: .NET 3.5 ; Telerik ASP.NET controls for 3.5 (2008.1.619.35)

The error is in the code (js):

Telerik.Web.UI.RadMenu._getMaxRootItemWidth=function(_43){

var _44=Telerik.Web.UI.RadMenu._getChildListElement(_43);

var _45=_44.childNodes; ß-this line, 'childNodes' is null or not an object

_43- is a Context Menu element, at the time of the error it is empty, though after you ignore the errors (there can be a number of them ,all the same) the context menu displays just fine.

_44 is null

Some call stack details (not every call stack element, just those seem important)

Called from: var _3e=Telerik.Web.UI.RadMenu._getMaxRootItemWidth(_3d);

Called from: if(this._flow==Telerik.Web.UI.ItemFlow.Vertical){

Telerik.Web.UI.RadMenu._adjustRootItemWidth(this.get_id());

} –tried to set Flow=”Horizontal” in the menu or in the DefaultSettingsGroup- didn’t help

Called from: _7.repaint();

Called from: $telerik.repaintChildren(this); where “this” is a PanelBar – this.element.id= ctl00_ContentPlaceHolder1_rpbNav

Called from: this.get_panelBar()._callRadShow();

Called from:

if (!initialLoad) {

// If this isn't the first page load (i.e. we are doing an async postback), we

// need to re-raise the Application's load event.

Sys.Application.raiseLoad();

}, which is in MicrosoftAjaxWebForms.js

Looks like the conext menu gets interrogated by repaint from RadPanleBar before it gets populated.

Part of .ASPX page (it is a content page within master page):

<telerik:RadPanelItem runat="server" Text="Farm Hierarchy"

Width="100%" Value="FarmHierarchy" Expanded="true" >

<Items>

<telerik:RadPanelItem runat="server" Value="FarmHierarchyBody" >

<asp:UpdatePanel ID="upMenu" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">

<cc2:xcPanel ID="pnlFarmTree" runat="server" Width="100%" CssClass="PanelNoBorder" meta:resourcekey="pnlFarmTreeResource1">

<cc2:xcTreeView ID="trMenu" runat="server" CssClass="TreeView" PersistLoadOnDemandNodes="true" Height="400px"

NodeIndent="15"

onnodeexpand="trMenu_TreeNodePopulate" ShowLines="True" Style="border-top-style: none;

border-right-style: none; border-left-style: none; border-bottom-style: none" Skin="Sunset" MultipleSelect="true"

Width="100%" meta:resourcekey="trMenuResource1" onnodeclick="tree_NodeClick" SingleExpandPath="false" OnContextMenuItemClick="tree_ContextClicked" onClientContextMenuShown="ClientContextMenuShown"

<telerik:RadTreeViewContextMenu Skin="Outlook" ID="EmptyMenu" runat="server" Width="30px" >

<Items>

<telerik:RadMenuItem IsSeparator="true"></telerik:RadMenuItem>

</Items>