How to locate the node when using template

[David zhao]

[aspx]
<telerik:RadTreeView ID="RadTreeView1" Runat="server" >
                <NodeTemplate>
                        <div>
                            <asp:CheckBox ID="CheckBox_IsChoosed" runat="server" onclick="OnCheckedChanged()"/>
                            ..........(other controls)
                        </div>
                </NodeTemplate>
</telerik:RadTreeView>

[My Question]
I want to use client javascript codes to deal with the CheckBox'  checked changed event. But in the javascript OnCheckedChanged(), how can I locate the node in which the CheckBox is changed?
If I used the RadTreeView' OnClientNodeClicked, I have no idea of way to make sure which control in the template fire the OnClientNodeClicked.

Thanks

[Shinu]

Hi David,

Try out the following approach:

Iterate through the RadTreeNodes from server side and attach the onclick event from code. Then you will be able to pass TreeNode text/value to client event handler. Now in the event handler, get the parameter passed and access the corresponding node using any of the methods findNodeByText/findNodeByValue based on value passed.


Hope this help,
Shinu.

[David zhao]

To Shinu:
    Thank you for your reply. But I don't understand your suggestion.
    My javascript code to handle the CheckBox's client checked changed event can be fired , but I don't know how to locate the node in which the CheckBox is changed when using javascript function. If I iterated throug the RadTreeNodes from server side when some CheckBox was changed, I don't need the client javascript code at all.

[Nikolay Tsenkov]

Hello David zhao,

Just a suggestion:
- Why don't use the check-boxes provided by the treeView (just set CheckBoxes="true" in the markup of the tree), trap the event OnClientNodeChecked() and get the node that is being checked by args.get_node()?

And you still can use template!

Hope this is going to help you!


Regards,
Nikolay Tsenkov
the Telerik team

[David zhao]

Thank the telerik admin for your suggesion

The reasons  for using node template, not CheckBox built in the RadTreeView, is that I have to put two CheckBoxs in a node at the same time.
Furthermore, the CheckBox built in the RadTreeView is some small. My client has complained that he hardly saw the tick in the CheckBox.
Is there a way to change the style of the CheckBox built in RadTreeView?

So, the telerik admin, if I choose to use the node template with CheckBox , when I check the CheckBox,  is there a way to locate the node by using client js codes?

[Nikolay Tsenkov]

Hello David,

Is there a way to change the style of the CheckBox built in RadTreeView?
- No, or not for all browsers. I think only Opera supports such an operation. This is because these checkboxes are the default rendered by the browser.

...is there a way to locate the node by using client js codes?
- Yes, there is! You can use the method _extractNodeFromDomElement over the treeView object.

Hope this is going to help you!


Regards,
Nikolay Tsenkov
the Telerik team

[David zhao]

Thank the telerik admin for your suggesion.
I deside to use server code to deal with my problem for time reason.