DlhSoft Hierarchical Data Control Library allows you to create Windows client applications running on Microsoft .NET 2.0/3.0 platform that would display and update hierarchical data using a tree-grid, based on indent levels.

Includes Data Control Library and Data Framework assemblies.
Requires Windows XP, Windows Server 2003 or Windows Vista, and .NET Framework 2.0/3.0.

More information about the DataTreeGridView control exposed by the library is presented below:

Inherits behavior and user interface from the well-knwon DataGridView control of .NET Framework 2.0
Integrates with Visual Studio 2005 environment, and provides Intellisense support
Supports all .NET languages, including but not limited to C#, Visual Basic .NET, C++ .NET, J#
Provides extended development documentation, in compiled HTML form
Allows you to set up a column from the grid to be displayed as a tree-view
Allows end-users to expand or minimize parent nodes (nodes that have sub-content)
Allows you to manage indentation level, expansion, and icon indexes (from a custom image list) for nodes programatically
Allows you to databind indent level, is expanded and icon index members (properties or columns) from the databinding source
Supports adapting parent-child relation-based data hierarchies binding, by using Hierarchical Data Adapter component from Data Control Library assembly
Supports any ADO .NET data sources (DataSets, DataTables, IEnumerable-, IList-, IBindingList-implementing collections, etc.)
Provides a very flexible databinding model, based on ADO .NET standards, including Visual Studio designer support for connecting and using data sources and data members
Scales up to support up to very large quantities of data (tens of thousands of items)
Supports the end-user's culture (language and region) for displaying and retreiving culture-related values, such as numbers, date/times, or prices
Supports the end-user's selected Windows theme
Provides extensibility support, by using events or type inheritance.