If I understand you correctly (and the question is rather vague, so I'm not at all sure about this), then the Windows Workflow Foundation certainly has this feature. However, it almost certainly overwhelms what you are asking for.
Well, you added a link that better explains what you mean by a breakpoint.
With this in mind, .Net has nothing built in to support this directly. However, everything that uses a state machine on which a state machine can be stored can be checked / verified, and the transaction has a natural built-in look. WWF is one example of this.
Joel Coehoorn Nov 30 '08 at 19:49 2008-11-30 19:49
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