How to convert ocx files into DLL files referenced by C# programs

1. Open the VS2008 or VS2010 command prompt (this example uses VS2008)

Copy the ocx file to d:\Program Files\Microsoft Visual Studio 9.0\VC

2. Register ActiveX controls

regsvr32 IB_USBKEY.ocx

3. Compile OCX files

aximp IB_USBKEY.ocx

Generate two dll files, files with Ax prefix in the project

4. Copy the generated two dll files into the project