How to not-show menu that displayed when right click on the node ?

[Marina]

Menu is dinamically created in code behind:

Dim objMenu As Telerik.Web.UI.RadTreeView = CType(m.GetMasterMenu(), Telerik.Web.UI.RadTreeView)
Dim objUIService As New UIService(objUserSession)
Dim objMenuData = objUIService.GetMenus(0)
Dim XMLMenuItem = objMenuData.Item(0)
objMenu.LoadXml(XMLMenuItem.XMLMenu.ToString)
objMenu.Width = "220"

It creates following nodes on the page:

Node 1
     Node2
          Node3
               Node4

Pointing to Node4, then clicking right mouse button displays menu with the following items :
"Open", "Open in New Tab","Open in New Window", "Save Target As", etc.

How to Not-show that menu on the right mouse button click on Node4 ?

Thank you

[Princy]

Hi Marina

Try the following code snippet to hide the RadContextMenu for a  particular node.
Hope this helps.
aspx:

<telerik:RadTreeView ID="RadTreeView" runat="server" OnClientContextMenuShowing="OnClientContextMenuShowing">
    <Nodes>
        <telerik:RadTreeNode Text="Node 1">
        </telerik:RadTreeNode>
        <telerik:RadTreeNode Text="Node 2">
        </telerik:RadTreeNode>
        <telerik:RadTreeNode Text="Node 3">
        </telerik:RadTreeNode>
        <telerik:RadTreeNode Text="Node 4">
        </telerik:RadTreeNode>
    </Nodes>
    <ContextMenus>
        <telerik:RadTreeViewContextMenu ID="RadTreeViewContextMenu1" runat="server">
            <Items>
                <telerik:RadMenuItem  Text="Open">
                </telerik:RadMenuItem>
                <telerik:RadMenuItem Text="Open in new tab" >
                </telerik:RadMenuItem>
                <telerik:RadMenuItem  Text="Save Target as">
                </telerik:RadMenuItem>
            </Items>
        </telerik:RadTreeViewContextMenu>
    </ContextMenus>
</telerik:RadTreeView>

JS:

<script type="text/javascript">
function OnClientContextMenuShowing(sender, args)
{
  var menu = $find("<%= RadTreeViewContextMenu1.ClientID %>");
  if (args.get_node().get_text() == "Node 4")
  {
     args.set_cancel(true);
  }
}
</script>

Thanks
Princy

[Marina]

In my case there is no RadTreeViewContextMenu item.
Menu that has "Open", "Open in New Tab", etc. items is the default menu that comes with RadTreeView control.
Also all the nodes of RadTreeView are created dynamically by loading XML as I specified.
Some more details:

MyPage.aspx  has

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="MyPage.aspx.vb" MasterPageFile="~/MyBase.master" Inherits="MyNamespace.MyPage" %>
<AjaxSettings>
   <telerik:AjaxSetting AjaxControlID="Timer1">
      <UpdatedControls>
         <telerik:AjaxUpdatedControl ControlID="menu1" />
      </UpdatedControls>
   </telerik:AjaxSetting>
<asp:timer id="Timer1" runat="server" interval="300000">
</asp:timer>

MyBase.master  has
<td width="100%" valign="top">
   <div id="Div1" style="display:none;">
      <telerik:RadTreeView ID="menu1" EnableEmbeddedSkins="false" runat="server" Width="220px" ShowLineImages="false"    style="display:inline-block; overflow: hidden">                                                   
      </telerik:RadTreeView>
   </div>
</td>

MyPage.aspx.vb  has
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
   If Not Page.IsPostBack Then
      Timer1Tick(sender, e)
   End If
End Sub

Protected Sub Timer1Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
      LoadMyMenu()
End Sub

Private Sub LoadMyMenu()
      Dim objMenu As Telerik.Web.UI.RadTreeView = CType(m.GetMasterMenu(), Telerik.Web.UI.RadTreeView)
      Dim objUIService As New UIService(objUserSession)
      Dim objMenuData = objUIService.GetMenus(0)
      Dim XMLMenuItem = objMenuData.Item(0)
      objMenu.LoadXml(XMLMenuItem.XMLMenu.ToString)
      objMenu.Width = "220

‘This line works:
objMenu.Nodes.FindNodeByText("Node1").Nodes.FindNodeByText("Node2").Nodes.FindNodeByText("Node3").Nodes.FindNodeByText("Node4").Text = "TEST 2466

‘This line does Not cancel default context menu:
objMenu.Nodes.FindNodeByText("Node1").Nodes.FindNodeByText("Node2").Nodes.FindNodeByText("Node3").Nodes.FindNodeByText("Node4"). EnableContextMenu = False
End Sub

So, how to cancel dfault context menu in my case ? Thank you

[Marina]

In my case there is no RadTreeViewContextMenu item.
Menu that has "Open", "Open in New Tab", etc. items is the default menu that comes with RadTreeView control.
Also all the nodes of RadTreeView are created dynamically by loading XML as I specified.
Some more details:

MyPage.aspx  has

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="MyPage.aspx.vb" MasterPageFile="~/MyBase.master" Inherits="MyNamespace.MyPage" %>
<script type="text/javascript">
function ClientContextMenuShowing(sender, eventArgs) {
        var node = eventArgs.get_node();
       
        if ((node.get_text() == "Node4")) {
            eventArgs.set_cancel(true);
        }
    }
</script>
<AjaxSettings>
   <telerik:AjaxSetting AjaxControlID="Timer1">
      <UpdatedControls>
         <telerik:AjaxUpdatedControl ControlID="menu1" />
      </UpdatedControls>
   </telerik:AjaxSetting>
<asp:timer id="Timer1" runat="server" interval="300000">
</asp:timer>

MyBase.master  has
<td width="100%" valign="top">
   <div id="Div1" style="display:none;">
      <telerik:RadTreeView ID="menu1" EnableEmbeddedSkins="false" runat="server" Width="220px" ShowLineImages="false"    style="display:inline-block; overflow: hidden">                                                   
      </telerik:RadTreeView>
   </div>
</td>

MyPage.aspx.vb  has
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
   If Not Page.IsPostBack Then
      Timer1Tick(sender, e)
   End If
End Sub

Protected Sub Timer1Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
      LoadMyMenu()
End Sub

Private Sub LoadMyMenu()
      Dim objMenu As Telerik.Web.UI.RadTreeView = CType(m.GetMasterMenu(), Telerik.Web.UI.RadTreeView)
      Dim objUIService As New UIService(objUserSession)
      Dim objMenuData = objUIService.GetMenus(0)
      Dim XMLMenuItem = objMenuData.Item(0)
      objMenu.LoadXml(XMLMenuItem.XMLMenu.ToString)
      objMenu.Width = "220

   ‘This line works:      objMenu.Nodes.FindNodeByText("Node1").Nodes.FindNodeByText("Node2").Nodes.FindNodeByText("Node3").Nodes.FindNo   deByText("Node4").Text = "Node4”

‘This line does Not cancel default context menu:
objMenu.Nodes.FindNodeByText("Node1").Nodes.FindNodeByText("Node2").Nodes.FindNodeByText("Node3").Nodes.FindNodeByText("Node4"). EnableContextMenu = False
‘This, together with ClientContextMenuShowing() java script function ()se above does Not cancel default context menu also:
objMenu.OnClientContextMenuShowing = "ClientContextMenuShowing"

End Sub

So, how to cancel default context menu in my case for a particular node or set of nodes. Thank you

[Marina]

I think I found solution. In my case adding the below to the master page prevents default context menu to be displayed for all derived pages:

 

in   .master

<script type="text/javascript">

function ClientContextMenuShowing(sender, eventArgs) {

 alert("ClientContextMenuShowing in RI");

 var node = eventArgs.get_node();

 $telerik.cancelRawEvent(eventArgs.get_domEvent());

 }

</script>

 

<telerik:RadTreeView ID="mnu" runat="server" Width="220px" ...... onClientContextMenuShowing="ClientContextMenuShowing">

Hope it helps other developers