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GUI for .NET Programming
Accessing and Managing .NET Classes from ABL : Handling .NET exceptions : Unique scenarios when handling errors with .NET objects : Raising errors from overridden .NET methods or implemented .NET interface members
 
Raising errors from overridden .NET methods or implemented .NET interface members
If you raise an ABL error from within an overridden .NET method or an implemented .NET interface member, if the method or property is referenced from the .NET context, the AVM converts the error to a .NET System.ApplicationException according to how you raise the error. For more information, see Error handling for ABL-extended .NET classes.