Adding a node client side from a webservice

[Jacky Chau]

I want to be add a node to a tree on the clientside.  However, I want the server to create the node since my business logic is on the server side.  Is it possible to have a webservice or pagemethod return a RadTreeNodeData and use that to create a clientside RadTreeNode?  Since you can already expand from an array of RadTreeNodeData via webservice, I am sure RadTree has a way to convert RadTreeNodeData to clientside RadTreeNode.  Is there function exposed?

[Yana]

Hello Jacky Chau,

Thank you for contacting us.

I suggest you use Load-On-Demand feature of RadTreeView via WebService. Please check our online example demonstrating this approach.

All the best,
Yana
the Telerik team

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[Jacky Chau]

Sorry if I didn't make my explanation clearer, but I already know how to load nodes via webservice when expanding a parent node.  What I want to do now is ADD a node on the clientside.  The parent node is already expanded and I want to add an additional node to the branch.  I want to know if there's a client side function that turns a RadTreeNodeData that's returned by a webservice into a client side RadTreeNode.  I am sure internally you guys have such a function to parse the array of RadTreeNodeData returned by the webservice when doing load on demand expanding. 

For example, I have a folder tree on a form.  There's a Add Folder button on the toolbar.  On the button click, I call a webservice to return a RadTreeNodeData.  Now I want to add a node to the tree based on the returned RadTreeNodeData json.  Is that possible?

[Atanas Korchev]

Hello Jacky Chau,

We use the following code internally:

     var dynamicNode = new Telerik.Web.UI.RadTreeNode();
     dynamicNode._loadFromDictionary(nodeData);
     parentNode.get_childNodes().add(dynamicNode);

Keep in mind this is internal code which can change in the future. Use at your own risk.

Regards,
Albert
the Telerik team

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[Jacky Chau]

Thanks Albert!  That's exactly what I am looking for.  Do you mind sharing where nodeData is defined?  Is that just parsing the json returned by the webservice?  Is this code accessible to developers?

[Atanas Korchev]

Hello Jacky Chau,

The "nodeData" variable is the object containing the node properties returned from the web service.

Kind regards,
Albert
the Telerik team

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