Circular Reference Pattern/Algorithm

[drdexter33]

I have a rather challenging problem (at least for me it is...)

I have a circular reference in a datastructure that I need to trap for and so far, I haven't been able to figure it out using recursion or been able to find an existing algorithm or design pattern that addresses the issue.

And example of the problem is that say we have 4 employees that each have a supervisor like this:

1. Dan
2. Kim
3. Jay
4. Bob

and

Kim reports to Dan
Jay reports to Kim
Bob reports to Jay
and our data might say that:

Dan reports to Bob, but that creates a circular reference that we want to trap for.

So that's the problem.

We're using C# in asp.net.

Thanks.

Doug.