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Using dllimport

I am trying to use the attribute DllImport

in the following code:

[DllImport("grfinger.dll",EntryPoint="_grstartenroll@4")]
public static extern int startenroll(int context);

to get the function name i used dumpbin / export. When I run the code, I get the following exception:

Unable to find an entry point name '_grstartenroll@4' in DLL 'grfinger.dll'

...

How can I resolve this error?

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2 answers


_grstartenroll @ 4 is the name of the decorated function in the dll.

This is similar to the standard naming conventions, you can try:

[DllImport("grfinger.dll",EntryPoint="_grstartenroll@4", CallingConvention=CallingConvention.StdCall]
public static extern int startenroll(int context);


Otherwise I would try to get the name of the undecorated function, you can pipe the dumpbin output to undname like this:

dumpbin / exports grfinger.dll | undname _grstartenroll @ 4

and then use undecorated name in your dll import.

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Without any information about a specific function or library: I believe that specifying the entry point as entrypoint="startenroll"

or entrypoint="#4"

instead of dumpbin output might help.



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