Represents the base interface for all contracts that are used for communication between components that are updated independently.
Assembly: System.AddIn.Contract (in System.AddIn.Contract.dll)
The interface defines a contract that independently updated components, such as an application and an add-in, can use to communicate. Components can use to communicate across process or application domain boundaries, or to communicate with other components in the same process or application domain. serves a similar purpose for components created using the .NET Framework as the IUnknown interface serves for components created using COM. To determine whether an object implements a particular contract, use the QueryContract method.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.