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IContract.QueryContract Method

.NET Framework 4.5

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
)

Parameters

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.

Remarks

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.

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Reference

IContract Interface

System.AddIn.Contract Namespace

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