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AddInBase.RequestService Method

Returns an object that extends a feature in a Microsoft Office application.

Namespace:  Microsoft.Office.Tools
Assembly:  Microsoft.Office.Tools.Common.v4.0.Utilities (in Microsoft.Office.Tools.Common.v4.0.Utilities.dll)
protected virtual Object RequestService(
	Guid serviceGuid
)

Parameters

serviceGuid
Type: System.Guid
A Guid that identifies an extensibility interface that is supported by Microsoft Office applications.

Return Value

Type: System.Object
An object that implements the extensibility interface that is identified by serviceGuid.

Override this method in an application-level add-in to implement an extensibility interface that extends a feature in a Microsoft Office application. For more information, see Customizing UI Features By Using Extensibility Interfaces.

When you override this method, check the value of the serviceGuid parameter to determine which extensibility interface is being requested, and then return an object that implements the interface. When your add-in is loaded, the Visual Studio Tools for Office runtime calls RequestService one or more times for each interface that is supported by the application, and it sends the return value to the Microsoft Office application that is loading your add-in. For more information about the load process of add-ins, see Architecture of Application-Level Add-Ins.

NoteNote

If you are customizing the Ribbon UI by creating your own implementation of the Microsoft.Office.Core.IRibbonExtensibility interface or by adding a Ribbon (XML) item to your project, you can alternatively override the CreateRibbonExtensibilityObject method instead of the RequestService method. For more information, see Ribbon Overview and Ribbon XML.

For a code example that demonstrates how to implement an extensibility interface and override the RequestService method, see Customizing UI Features By Using Extensibility Interfaces.

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