This documentation is archived and is not being maintained.

IContract.QueryContract Method

Returns a contract that is implemented by this contract.

Namespace:  System.AddIn.Contract
Assembly:  System.AddIn.Contract (in System.AddIn.Contract.dll)

IContract QueryContract(
	string contractIdentifier


Type: System.String

A string that identifies the contract that is being requested.

Return Value

Type: System.AddIn.Contract.IContract
An IContract that represents a contract that a client is requesting from the current contract; null if the current contract does not support the contract that is requested.

The QueryContract method enables IContract objects to expose other contracts. QueryContract serves a purpose similar to that of the IUnknown.QueryInterface method in COM.

The format of the strings used to identify contracts is defined by the IContract implementation. It is recommended that you use the AssemblyQualifiedName of the contract that is being queried.

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.

.NET Framework

Supported in: 3.5