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In the .NET fusion logger (FUSLOGVW.exe) what do the two options in the lower right of the screen do?

 Log Categories
  + Default
  + Native Images

And how can I use either one to diagnose a mixed-mode assembly problem?

user403830
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    possible duplicate of [What is the meaning of Default/NativeImage in fuslogvw?](http://stackoverflow.com/questions/944633/what-is-the-meaning-of-default-nativeimage-in-fuslogvw) – adrianbanks Jul 28 '10 at 13:59
  • The questions ARE similar, but the accepted answer starts with "I think." This one already has a much more detailed answer. – user403830 Jul 28 '10 at 14:04

1 Answers1

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Native images are the files generated by ngen.exe. It contains pre-compiled machine code for an assembly, so that the JIT compiler isn't needed. All .NET framework assemblies are ngen-ed. They have the .ni.dll filename extension.

You are typically not interested in them if you are trying to troubleshoot an assembly resolution problem. But you can see them getting loaded if you choose "Native Images" instead of "Default".

Hans Passant
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