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[ForeignKey] not working in System.ComponentModel.DataAnnotations

I am using System.ComponentModel.DataAnnotations in MVC 4 and I am able to specify [Key] for the primary key but [ForeignKey] does not come up in the intellisense nor can I just type in [ForeignKey] without getting an error. Nothing that I have found yet directs me to a possible solution.

Can anyone help?
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AmbassadorSpock
Asked:
AmbassadorSpock
1 Solution
 
StephanLead Software EngineerCommented:
The ForeignKeyAttribute is available in namespace "System.ComponentModel.DataAnnotations.Schema" inside library "System.ComponentModel.DataAnnotations.dll, v4.0.0.0"

This attribute is only available on .NET 4.5 (and not 4.0)
http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.schema.foreignkeyattribute.aspx

If you are working in .NET 4.0 consider using the AssociationAttribute:
http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.associationattribute(v=vs.100).aspx
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