Home/ Questions/Q 983869
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-16T04:55:32+00:00

I have encountered an exception when I use Entity Framework 4.0 RC. My Entity

  • 0

I have encountered an exception when I use Entity Framework 4.0 RC.
My Entity Framework model is encapsulated in a private assembly who’s name is Procurement.EFDataProvider and my POCO classes are inside of another assembly Procurement.Core
The relation between Core(Business Logic)and EFDataProvider(Data Access) is with a factory named DataProvider

so when I try to create an objectset

objectSet = ObjectContext.CreateObjectSet<TEntity>();

I get an error:

Mapping and metadata information could not be found for EntityType ‘Procurement.Core.Entities.OrganizationChart’.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    For anyone else dealing with the error, I think it’s worth mentioning some scenarios that I’ve found that cause this (extremely unhelpful) error:

    • Misspelled properties (case-sensitive!)
    • Properties missing in the POCO class
    • Type mismatches between the POCO and entity-type (e.g., int instead of long)
    • Enums in the POCO (EF doesn’t support enums right now as I understand)

    There might be other causes as well.

    HTH

    • 0