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Is it possible to somehow get the debugger context in F# interactive? For instance, if I hit a breakpoint in C# project then I would like to work with local variables in F# interactive, the same way I can work with them in immediate window. Is there any way to do so? Or do I need to create a debugger visualizer for that?

Mark Pattison
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Max
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2 Answers2

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Neither. You need to create an Expression Evaluator for it. Not sure if C# can be extended, but there is a sample in the VS SDK (the 2008 one at least).

leppie
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  • Do you think it's not possible with debugger visualizer? I found this one on codeplex http://poshdebugvisualizer.codeplex.com and it seems to do what I want only with PowerShell. I would rather go with IronPython, IronRuby or even C#, if not with F#. – Max Jan 20 '11 at 17:01
  • If you make it like that I guess, but not for functionality in the watch and immediate windows. From what I can see you need to decorate every type with that DebugVisualizer attribute, which is hardly convenient. – leppie Jan 20 '11 at 17:06
  • Here's another plugin http://code.google.com/p/linqpadvisualizer which allows to use visualizer with any C# type without any decoration. – Max Jan 20 '11 at 18:39
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I've make very similar tool for Python, so I'm just using Python shell to evaluate some expressions like in Immediate Window. For this I've created a very simple VS Add-In and Python helper script. You can find sources on github - https://github.com/dp0h/VsImmediate

Andrei Visnakovs
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