No, it is not possible to set the extent of a feature class programmatically using ArcObjects because there are no methods designed to set the extent of a feature class. The only method returned from the Extent property is the UpdateExtent method, which is provided in the IFeatureClassManage interface. The UpdateExtent method recalculates the actual extent of the feature class but does not allow users to set the extent of the feature class other than the actual extent.
- ArcObjects SDK for the Java Platform
- ArcObjects SDK Microsoft NET Framework