Home / Community & Support / Developer Productivity Tools Forums / ASP.NET AJAX > TreeView > how to Cancel Event OnClientNodeClicked

• Wilson

  Posted on Jan 27, 2012 (permalink)

  Hi
  
  I have to cancel the event if the condition is False, for example: I have a treeview with images, before opening the image is valid if the image is already displayed, if it is  already displayed have to cancel the event, not allowing it to spread
  
  how I do this
  
  thanks
  
  

  <telerik:RadTreeView ID="DocTreeView" runat="server" CssClass="cssTreeView" Height="100%"

  Width="285"  OnClientNodeClicked ="onclickTreeview" onNodeClick="DocTreeView_NodeClick">

   </telerik:RadTreeView>

  
  My Jquery Code
  

  function onclickTreeview(sender, args) {

       

         code........

          

          if (!AllowImageOpen) {

              alert('This image is now displayed');

              // cancel the event here

          }

      }

  }

  
  

  Reply

• Shinu MVP

  Posted on Jan 30, 2012 (permalink)

  Hello Wilson,
  
  You can attatching the onClientNodeClickeing Event  and cancel the event.  Here is the help documentation.
  OnClientNodeClicking.
  
  Thanks,
  Shinu.

  Reply

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