Query new features in polygons

[NigelDsouza]

Hi,

I am trying to develop a Add In that will help the user automatically point out changes in a new layer(Polygon).

Case: I have two feature classes of state polygon data say. One feature class is old and the second is new. I need

to some how compare the two layers and select features in the new layer that do not exist or have been modified in the old layer.

I have to do this spatially. I am currently using overlap for starters...

How can I achieve this using arcObjects?

Regards,

Nigel.

[SamiEria]

1) One way to keep track of changes in features residing in a geodatabase is to use versioning. Please refer to the topics below:

    (ArcObjects Help)

    Finding differences between versions

    http://resources.arcgis.com/en/help/arcobjects-net/conceptualhelp/#/Finding_differences_between_vers...

    (ArcGIS Desktop Help)

    A Quick Tour of Versioning

    http://resources.arcgis.com/en/help/main/10.2/#/A_quick_tour_of_versioning/003n000000t7000000/

    (ArcGIS Desktop Help)

    Version Editing Process

    http://resources.arcgis.com/en/help/main/10.2/#/The_version_editing_process/003n000000w7000000/

2) Your other option is to use Replication. See the topics below about replication in the ArcGIS Desktop Help and ArcObjects Help:

    (ArcGIS Desktop Help)

    Working with Geodatabase Replicas

    http://resources.arcgis.com/en/help/main/10.2/#/Working_with_geodatabase_replication/003n000000v1000...

    (ArcObjects Help)

    About Replication

    http://resources.arcgis.com/en/help/arcobjects-net/conceptualhelp/#/Replication/000100000msw000000/