Indicates that no class interface is generated for the class. If no interfaces are implemented explicitly, the class can only provide late-bound access through the IDispatch interface. This is the recommended setting for System.Runtime.InteropServices.ClassInterfaceAttribute. Using ClassInterfaceType.None is the only way to expose functionality through interfaces implemented explicitly by the class.
Syntax
Remarks
Tlbexp.exe (Type Library Exporter) exposes the first public, COM-visible interface implemented by the class as the default interface of the coclass. Beginning with the .NET Framework version 2.0, you can specify the default interface exposed to COM by using the System.Runtime.InteropServices.ComDefaultInterfaceAttribute attribute. If the class implements no interfaces, the first public, COM-visible interface implemented by a base class becomes the default interface (starting with the most recently derived base class and working backward). Tlbexp.exe exposes _Object as the default interface if neither the class nor its base classes implement interfaces.
Requirements
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0