C# graph drawing library?

Question

I'm looking for a (free) library which allows me to draw a CFG (control flow graph). Something like yFiles, but free or preferably open source? Ideally this library would allow the user to navigate the graph (and modify it), i.e. the graph isn't just a static a priori rendered bitmap. Ideas?

Update:
Glee in combination with the mentioned QuickGraph library seems to work pretty nice. thx

Answer 1

You might want to check out QuickGraph.

NodeXL might also be of interest (visualization library). It's WPF, but you can use a container to host it if you need WinForms.

Answer 2

ZedGraph has been able to produce very graph I've ever needed.

Answer 3

Try out this (Efficient Sugiyama algoritm is your friend):

Graph#

Answer 4

I use GraphViz to generate this sort of graph. My app generates the .dot file that can then is then passed into GraphViz. It supports a load of file formats, such as bmp, jpg, png, pdf, svg etc etc.