The ArcGIS Explorer API may throw different types of exception where appropriate, including .NET framework exception types. For example, passing a nullNothingnullptra null reference (Nothing in Visual Basic) Geometry parameter in to the GeometryOperations.Move method will throw a System.ArgumentNullException .NET framework exception.

ArcGIS Explorer also has a number of specific exception classes which inherit from the generic System.Exception class. The ExplorerException class is a generic exception class used throughout the ArcGIS Explorer API; check the Message property for more information on the reasons for the exception.

In addition to this, other more specific ArcGIS Explorer exceptions inheriting from ExplorerException are:

• ThreadingException, which indicates an object has been accessed on a thread different to the one on which it was created.
• ConnectionException, which indicates a problem connecting a Table, Raster, or Layer.