Release 10.1A: OpenEdge Development:
.NET Open Clients

Handling Errors

.NET clients handle errors by catching exceptions. To enable .NET proxies to throw exceptions, OpenEdge establishes two exception class hierarchies:

General 4GL exceptions — A hierarchy of exception classes that extend the Open4GLException class.
DataSet/DataTable exceptions — A ProDataException class that extends the standard System.Data.DataException class.

The following section describes general 4GL exceptions in detail:

General 4GL exceptions