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Rad dropdowntree onclick event

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DropDownTree
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Prabha
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Prabha asked on 06 Jun 2014, 06:19 AM
hai all,

     how do i call onclick or onnodeclick event in dropdowntree.?  bz there is no click event available in this control. i have to load some other control based on dropdowntree clicked node. 

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Princy
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answered on 06 Jun 2014, 07:33 AM
Hi Prabha,

RadDropDownTree have two events called OnClientEntryAdding  and OnClientEntryAdded. Both will fire when an entry is about to be added to the Entry area.  The OnClientEntryAdding  event can be cancelled and the OnClientEntryAdded event cannot be cancelled. In your Scenario you can use any of the event.

Let me know if you have any concern. 
Thanks,
Princy.
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Nencho
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answered on 06 Jun 2014, 10:44 AM
Hello Prabha,

Since the RadDropDownTree contains the RadTreeView control embedded in it, you could handle its NodeClick event handlers - both client and server side. Please consider the following implementation :


protected void Page_Load(object sender, EventArgs e)
   {
       RadDropDownTree1.EmbeddedTree.NodeClick += EmbeddedTree_NodeClick;
   }
 
   void EmbeddedTree_NodeClick(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
   {
       //implement logic here
   }


Regards,
Nencho
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Prabha
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answered on 06 Jun 2014, 11:06 AM
Hai Princy,
   OnClientEntryAdding   has been working fine. Thank you for your immediate reply.
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Sam
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answered on 11 Mar 2015, 06:29 PM
Could you please provide this mechanism of subscribing to
the event on the server side in VB. When I used the code convertor and used the
output, I had an error for each side of the equal sign, so there is something
still missing to make it work. Thank you.


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Sam
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answered on 11 Mar 2015, 07:16 PM
I found the code for VB in case anyone needs it - and it did not work in the Page_Load, it had to be in the dropdownTree Load event:

AddHandler SegmentsDownTree.EmbeddedTree.NodeExpand, AddressOf NodeExpand
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Robert Wang
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answered on 04 Mar 2016, 04:23 PM
Is it possible that you can give an example of VB in this case?  Thanks.
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Matthias
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answered on 22 Nov 2016, 10:09 AM

Hi Nencho,

could you please provide an example how to handle the NodeClick Event of the RadTreeView control on client side for a RadDropDownTree?

I can handle the OnClientEntryAdded-Event, when a Checkbox is checked, but not, if it is unchecked.

 

<telerik:RadDropDownTree RenderMode="Classic" ID="ddt" runat="server"
   CheckBoxes="SingleCheck" AutoPostBack="false"  OnClientEntryAdded="clientNodeChecked"
</telerik:RadDropDownTree>

 

Thanks for your help!


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Nencho
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answered on 24 Nov 2016, 08:49 AM
Hello Matthias,

The approach that we recommend in such scenarios is to use the client-side events of the embedded TrewView. In other words, in the code behind you can subscribe for the OnClientNodeChecked and handle the function in the markup:
//code-behind
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        ddt.EmbeddedTree.OnClientNodeChecked = "OnClientNodeChecked";
    }
}
//markup
<script type="text/javascript">
    function OnClientNodeChecked(sender, args) {
    }
</script>

Hope this would help.

Regards,
Nencho
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Prabha
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Princy
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Nencho
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Prabha
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Sam
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Robert Wang
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Matthias
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