How can the dll be unmapped from the address space?

[Guest]

Hi!

I call a native Dll in my C# application (platform invoke). How can the dll
be unmapped from the address space. I want to modify the dll file before
closing the application. I have found Freelibrary function, but how can it be
used in C#?

Thanks,

Frankie

 

[Guest]

You can't. The DLL gets loaded by the runtime and there is no provision for
telling it to unload. You might tell us why you think you need to modify a
DLL and we might have alternate ideas. There are only a couple reasons I
can think of for doing this.

 

[Guest]

I write a compiler. The native DLL mentioned by my question is produced by my
C# application. And after producing it is called by the app to test it, after
that I want to generate a modified dll

Thank you for your answer

Frankie

 

[Paul G. Tobey [eMVP]]

You could load the DLL, not by referencing it via P/Invoke, but by calling
LoadLibrary(), GetProcAddress(), and FreeLibrary(). That should cause it to
be properly unloaded, but, of course, it might be a bit of a challenge to
arrange the proper calling sequence for a function with a random signature
in managed code.

Paul T.

 

[Guest]

Thank you. It works

Frankie

You could load the DLL, not by referencing it via P/Invoke, but by calling
LoadLibrary(), GetProcAddress(), and FreeLibrary(). That should cause it to
be properly unloaded, but, of course, it might be a bit of a challenge to
arrange the proper calling sequence for a function with a random signature
in managed code.

Paul T.