If you are seeing this filename because of an error message (e.g., "opcnetapi.dll not found" or "opcnetapi.dll failed to register" ), here are the likely causes:
: In Visual Studio, right-click your project, select "Add Reference," and browse to find both OpcNetApi.dll OpcNetApi.Com.dll Basic Code Snippet // Example: Connecting to an OPC DA Server Opc.URL url = "opcda://localhost/MyOPCServer" ); OpcCom.Factory factory = OpcCom.Factory(); Opc.Da.Server server = Opc.Da.Server(factory, ); server.Connect(url, Opc.ConnectData( System.Net.NetworkCredential())); Use code with caution. Copied to clipboard Beckhoff Infosys Common Issues & Quick Fixes 1. "Could Not Load File or Assembly" opcnetapidll
To use OPCNetAPI.dll in a C# project, you need to reference the DLLs and create a factory to manage the connection. Basic Steps If you are seeing this filename because of
opcnetapidll typically refers to the core assembly (or a related interoperability layer) found in OPC Classic .NET development kits, most notably the . Basic Steps opcnetapidll typically refers to the core
If you are developing industrial automation software in C# or VB.NET, you have likely encountered OpcNetApi.dll
: This library was originally designed for .NET Framework 2.0 and 3.5 .