I'm currently migrating a big solution (~70 projects) from VS 2005 + .NET 2.0 to VS 2008 + .NET 3.5. Currently I have VS 2008 + .NET 2.0.
The problem is that I need to move projects one by one to new .NET framework ensuring that no .NET 2.0 project references .NET 3.5 project. Is there any tool that would give me a nice graph of project dependencies?
You can get a project dependency graph easily using Visual Studio 2010 Ultimate, scan to 5 minutes into this video to see how: http://www.lovettsoftware.com/blogengine.net/post/2010/05/27/Architecture-Explorer.aspx
In Visual Studio 2010 Ultimate: Architecture | Generate Dependency Graph | By Assembly.
To complete the eriawan answer on graphs generated by NDepend see screenshoots below. You can download and use the free trial edition of NDepend for a while.
More on NDepend Dependency Graph
More on NDepend Dependency Matrix:
Disclaimer: I am part of the tool team