Attaching a debugger to a running process on Vista or Windows 7 using Debugger.Break()

When encountering a Debugger.Break() statement on Vista, you will get this message instead:

"SomeProcess.exe has encountered a user-defined breakpoint."

If you click options in the right order, yo开发者_JAVA技巧u might be able to attach your debugger. if you don't, you won't. How do you force Windows to give you the Attach dialog every time?

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There is a registry entry that forces this behavior.

This registry setting is located at [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\ DbgJITDebugLaunchSetting].

It has a default value of 16. Change it to 2 and the JIT debugger dialog will be displayed immediately.

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