This is a TreeListView, running in virtual mode. the data is never stored within the control.
Latest Tree View Articles
Use ASP.NET 2.0's TreeView to Display Hierarchical Data
Thanks to ASP.NET 2.0's built-in TreeView control, you can give your Web site a professional-looking navigation system that displays hierarchical data—without having to write lots of code and script.
Bypassing the TreeView.ItemHeight Limitation
Learn to get around the limitation for the maximum value of the .NET TreeView's ItemHeight property.
Latest Developer Videos
More...Latest CodeGuru Developer Columns
C++ Tips and Tricks
Quirky and yet persistent, C++ is a language that keeps programmers coming back to it. Pick up some new ways to wrangle it into your workflow.

Working with Google Protocol Buffers and .NET
Learn about something called "Google Protocol Buffers," and watch for later posts on other IoT subjects.

Working with Primes and Fibonacci Sequences in Visual Basic
Play with the Fibonacci sequence and prime numbers in this example-driven article.

Lesson Learned: The Need for a Domain Language
Translation costs time and money, and can affect the quality of the product being made. Make sure all your team members speak the same language.