This is a TreeListView, running in virtual mode. the data is never stored within the control.
Latest Tree View Articles
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.
Learn to get around the limitation for the maximum value of the .NET TreeView's ItemHeight property.
Latest CodeGuru Developer Columns
Explore how to pass multiple parameters in a query string of a Web API URL.
Learn to create a custom color picker. Examples are both in C# and VB.NET.
Many people are still using older programming languages. Think about the pros and cons.