Usually, we don't provide any documentation or a step by step video how a certain Demo application has been built. You can download the complete C# and VB.NET projects. Hence, you can have a look at the exact code's implementation and inspect what kind of controls have been used in the project (e.g. RadTreeView
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Dess | Tech Support Engineer, Sr.
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