Error: "is not an attribute class" when using ConfigurationElementType attribute

Question

I'm trying to create a custom exception handler for the exception handling block of enterprise library 5.0. As far as I understand I need to start the class off with the attribute "[ConfigurationElementType(typeof(CustomHandlerData))]". But I get an error stating the ConfigurationElementType is not an attribute class.

Does anyone know what might be going on?

score 12 · Accepted Answer · answered Jun 23 '11 at 17:54

12

Try adding the keyword Attribute after ConfigurationElementType. It is not required, but this may get you to a more helpful error message... my guess would be that you are missing references... that's always the problem with EntLib.

answered Jun 23 '11 at 17:54

therealmitchconnors

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Wow, thanks so much. This indeed fixed the problem. Strange how all the resources out there (including msdn) use ConfigurationElementType rather than ConfigurationElementTypeAttribute. – Gavin Grant Jun 23 '11 at 18:02

score 5 · Answer 2 · answered Jul 24 '12 at 00:37

5

Be sure to add the reference to the System.ComponentModel.Compostion or Sytem.ComponentModel.DataAnnotations to your project under Project-Add References .Net tab.

Then you should be able to include 'using System.ComponentModel;' in your project to get your attributes working properly.

answered Jul 24 '12 at 00:37

Haldrich98

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adding System.ComponentModel.Compostion to references worked for me. – Ravi Gupta Jul 10 '13 at 10:13

score 0 · Answer 3 · answered Jul 11 '17 at 08:07

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Adding Enterprise Library Shared Library assembly to the references of the project worked for me. Then, you can add the using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;

answered Jul 11 '17 at 08:07

mggSoft

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Error: "is not an attribute class" when using ConfigurationElementType attribute

3 Answers3