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IAnnoClassAdmin Interface (ArcObjects .NET 10.8 SDK)
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IAnnoClassAdmin Interface

Provides access to members that control the annotation class admin interface. Note: the IAnnoClassAdmin interface has been superseded by IAnnoClassAdmin3. Please consider using the more recent version.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

When To Use

The IAnnoClassAdmin interface is used to modify the feature class extension properties of an annotation feature class.


Name Description
Write-only property AnnoProperties The labeling properties annotation class.
Read/write property AutoCreate Indicates if an annotation is to be automatically created when a feature is created.
Write-only property ReferenceScale The reference scale.
Write-only property ReferenceScaleUnits The units of the reference scale.
Write-only property SymbolCollection The symbol collection.
Method UpdateProperties Updates the property set.

Classes that implement IAnnoClassAdmin

Classes Description
AnnotationFeatureClassExtension An Esri annotation feature class extension.


In a versioned geodatabase, these properties apply to all versions and are not versioned. After creating an annotation feature class, modifying these properties may cause problems with the drawing and selection of annotation features. Adding new symbols to the SymbolCollection or changing the AutoCreate property are the only recommend modifications. Deleting or modifying symbols in the SymbolCollection requires updating all annotation features whose elements reference the group symbol. When adding new symbols to the SymbolCollection use the AddSymbol method of ISymbolCollection2, which will automatically assign a unique ID to the symbol. As with any schema related change, it is recommended that an exclusive schema lock be obtained before calling the UpdateProperties method.

See IAnnoClassAdmin2, and IAnnoClassAdmin3 for more properties of the AnnotationFeatureClassExtension.

The following example shows how you can use the IAnnoClassAdmin interface to turn of the auto-creation of annotation when features are created in the linked feature class.

See Also

IAnnoClass Interface | IAnnotationFeature Interface