ERPConnect supports the Netweaver RFC (SDK) starting by version 4.6.0.
To use it, set the Property Protocol of the R3Connection object to ClientProtocol.NWRFC before you open the connection.

R3Connection.Protocol = ClientProtocol.NWRFC;

For 64-Bit Environments the following DLLs are required:

  • ERPConnect35.dll or ERPConnect45.dll
  • sapnwrfc.dll
  • icuucXX.dll
  • icudtXX.dll
  • icuinXX.dll

(XX can vary depending on the version of the NW Rfc Libraries)

The ERPConnect*.dll are delivered with ERPConnect. The other DLLs must be downloaded from the SAP web site.