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ComInterfaceType Enumeration

Identifies how to expose an interface to COM.

Namespace:  System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

public enum ComInterfaceType

Member nameDescription
InterfaceIsDualIndicates the interface is exposed to COM as a dual interface, which enables both early and late binding. InterfaceIsDual is the default value.
InterfaceIsIUnknownIndicates an interface is exposed to COM as an IUnknown -derived interface, which enables only early binding.
InterfaceIsIDispatchIndicates an interface is exposed to COM as a dispinterface, which enables late binding only.

This enumeration works in conjunction with InterfaceTypeAttribute.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.