Create Custom ActiveX Controls for SAP B1
问题 I am trying to create custom control for SAP b1 using ActiveX. I created Windows Forms Control Library Made Project Assembly Info COM-Visible (Project properties => Application => Assembly Information) Registerd for COM interop (Project properties => Build) My UserControl looks like this: [ComVisible(false)] public delegate void OnCheckBoxClickEventHandler(string val); [ProgId("MyComLib.Controls.TextBoxCheck")] [ClassInterface(ClassInterfaceType.None)] [ComSourceInterfaces(typeof