C # 64-bit Win7 under DllImport LoadLibrary function failed Z

[dllimport["kernel32.dll"]]static extern IntPtr LoadLibrary (string lpfilename);p ublic void Fun () {   IntPtr p = LoadLibrary (Abc.dll);}

Normal under 32-bit XP system, 64-bit Windows 7 system, p-value returned as 0

Abc.dll can be called normally in MFC program with LoadLibrary. There is no shortage of any other related DLLs.

Compiling the WinForm program into a x86 target platform

32-bit System 64 system execution path is different

Such as
Program Files and Program files (x86)
System32 and SysWOW64
Includes reading the Wownode node inside the registry. is the location of the 32-bit program under the 64-bit system

C # 64-bit Win7 under DllImport LoadLibrary function failed Z