Our software is written in C # and must be connected to SAP. Because some of our customers use older versions of SAP, while others do not have SAP PI, we cannot connect through web services.
I tried connecting to SAP through the SAP NetWeaver Remote Function Call Library (sapnwrfc.dll) as follows:
- Add sapnwrfc.dll and other dlls from NWRFC_6-20004550.SAR (being icudt34.dll, icuin34.dll, icuuc34.dll, libicudecnumber.dll and libsapucum.dll) to C: \ WINDOWS \ system32 to make sure they can be found.
- In my C # code, add the following to the class definition:
[DllImport ("sapnwrfc.dll", CharSet = CharSet.Auto)]
public static extern void RfcInit ();
and the following in the method that should do the job:
RfcInit ();
Running this code gives a DllNotFoundException:
Failed to load DLL 'sapnwrfc.dll': this application could not be started because the application configuration is incorrect. Reinstalling the application may fix the problem. (Exception from HRESULT: 0x800736B1)
Running the standard connect-to-C ++ example - from-C #
[DllImport ("user32.dll", CharSet = CharSet.Unicode)]
public static extern int MessageBox (IntPtr hWnd, String text, String caption, uint type);
MessageBox (new IntPtr (0), "Hello World!", "Hello Dialog", 0);
works great.
Any suggestions on how to make this work fine (so we don’t need to get around this problem by writing a Java proxy using JCo)?
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