Error 0x80040703

[Nejchy]

I'm trying to use a C# dll function, but I always get this error.

Error Number: 0x80040703
Description: Failed to find DLL function: ClassLibrary2.Test2

I have never done this before so perhaps there is something wrong with my code.

UseDLL function exits with succesffully (with 0).

prototype BOOL ClassLibrary2.Test2(); 
prototype TestDLL(); 


function TestDLL() 
	STRING sPath, sDllResult;
	NUMBER	nResult; 
	BOOL   bResult;
begin 
	sPath=SUPPORTDIR ^ "ClassLibrary2.dll";      
  	MessageBox(sPath, INFORMATION); 

 	nResult=UseDLL(sPath); 
 	NumToStr(sDllResult,nResult);  
 	MessageBox(sDllResult, INFORMATION); 
 
 		bResult = ClassLibrary2.Test2();
    
 	UnUseDLL(sPath);  
end;

Thank you for your help.

[MichaelU]

UseDLL only works with native (think C or C++) DLLs. For .NET assemblies, look instead towards DotNetCoCreateObject or Managed Code Custom Actions.