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

Answer 2

I know you asked about WinForms, but I'm sure someone will hit this page when searching for WPF tree maps. This currently seems to be the best WPF freebie out there, though I found a few minor issues with it, it's still pretty good:

http://treemaps.codeplex.com/

Answer 3

Microsoft Research put one together.

Don't know how easy it is use.

http://research.microsoft.com/en-us/downloads/dda33e92-f0e8-4961-baaa-98160a006c27/default.aspx