Recommended practise for a TreeView if data source is a webservice

[Hinek]

I'm currently evaluating the TreeView for the following Scenario:

• data source is a webservice / WCF service
• 2000+ items
• service method allows partial loading

So I want to load only the root and the first sublevel of items and then lazy load items as nodes are expanded. My Questions:

1. Should I build the nodes myself or use the DataSource property?
2. Where do I find tutorials how to build a custom lazy load?

[Hinek]

I'm not sure if this is the best solution but I now used TreeNodeExpandMode.ServerSideCallBack and the NodeExpand event. Loading the root node in PageLoad and then loading the child nodes in NodeExpand event.

[Plamen]

Hi Hinek,

 
You can refer to our Load on Demand Modes demo where are shown all the modes that are supported by RadTreeView. Each of them is implemented in a different way and their main advantages and disadvantages are explained in our documentation section here. I will recommend you also the data binding section here.

You can also review our Performance demo where is shown how to load a larger quantity of nodes. 

Hope this will help you.

All the best,
Plamen Zdravkov
the Telerik team