LoadLibrary in C# Failing in XP 64bit machine

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Hi,
I am using the following code to load dlls

[DllImport("kernel32.dll",EntryPoint= "LoadLibraryA")]
public static extern IntPtr LoadLibrary(string dllToLoad);

This works fine in Vista and Windows 7 (also in 64bit environment)
But does not works in XP 64-Bit Version

I have seen the last error,it's giving 126 which means "module not found".
Can anyone give some clue to resolve this problem???

Posted 20-Jan-11 21:36pm

Debojyoti Majumder

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Indivara 21-Jan-11 9:58am

1. Does kernel32.dll exist on XP x64? (I think it should, just checking)
2. Does it have to be LoadLibraryA? Try without the 'A'?

4 solutions

Solution 3

Yup, I worked out the problem.
I had one dependent .dll which was built in x86 platform.
I replaced it with x64 version it worked.

I found this problem using the "Dependency Walker" tool.

Posted 21-Jan-11 19:43pm

Debojyoti Majumder

Solution 4

Make your application to work with any cpu..

Posted 20-Sep-13 20:08pm

sachinkarche

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Manfred Rudolf Bihy · Accepted Answer · 2011-01-21T04:04:00

I found this here on social.msdn.microsoft.com from moderator "Ray M":

"Any CPU will give you a 64 bit process on win64, you cannot load a 32bits dll into a 64 bits process. If you have no 64 bits versions of your dlls you can change your soltion platform from 'any cpu' to 'x86' to force a 32 bits process which has no issues loading 32 bits dlls."

I'd go with that advice and set platform to "x86". Why it works on Vista and Weven is beyond me, but I think could be that the have some kind of detection built into them that takes care of forcing the 32 bit process. You can check of course if the windows XP 64 bit system has the kernel32.dll in the appropriate place.

I know I'm poking at your problem with a long and not very solid stick (figuratively speaking), but maybe it helps you to get some ideas. :)

Best Regards,
Manfred

Sergey Alexandrovich Kryukov · Accepted Answer · 2011-01-21T10:53:00

Solution 2

Resolution by Manfred will certainly work, but... (see my comment).

I think, this is a good starting point:

http://msdn.microsoft.com/en-us/library/ms973190.aspx[^].

Thank you.

--SA

Posted 21-Jan-11 10:53am

Sergey Alexandrovich Kryukov