Visual Treemap in Winforms

Question

Are there any frameworks for building squarified treemaps in C# 2.0 WinForms?

Something similar to this:

Answer 1

Check Janus Grid Ex should have a tree view...

UPDATE: http://www.avizsoft.com/treemap.htm

WinChart™ - Adds Tree Map Chart Type http://www.infragistics.com/dotnet/netadvantage/winforms/whatsnew20082.aspx