Sign Up

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.

Have an account? Sign In

Have an account? Sign In Now

Sign In

Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.

Sign Up Here

Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

You must login to ask a question.

Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

The Archive Base

The Archive Base Logo The Archive Base Logo

The Archive Base Navigation

  • SEARCH
  • Home
  • About Us
  • Blog
  • Contact Us
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Add group
  • Groups page
  • Feed
  • User Profile
  • Communities
  • Questions
    • New Questions
    • Trending Questions
    • Must read Questions
    • Hot Questions
  • Polls
  • Tags
  • Badges
  • Buy Points
  • Users
  • Help
  • Buy Theme
  • SEARCH
Home/ Questions/Q 748917
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Editorial Team
Asked: May 14, 20262026-05-14T14:22:31+00:00 2026-05-14T14:22:31+00:00

When I use TryGetObjectByKey on my ObjectContext , it returns an error. An item

  • 0

When I use TryGetObjectByKey on my ObjectContext, it returns an error. An item with a duplicate value already exists.

When I look at my objectContext, I see that the ObjectSets are empty. What am I doing wrong? When I enumerate the ObjectSet by hand, by using ToArray on it, or by using the debugger, it does work.

LazyLoadingEnabled is set to true.

I reuse 2 tables from another EDMX, but they are in different namespaces and they are not the objectSets I try to approach.

  • 1 1 Answer
  • 0 Views
  • 0 Followers
  • 0
Share
  • Facebook
  • Report

Leave an answer
Cancel reply

You must login to add an answer.

Forgot Password?

Need An Account, Sign Up Here

1 Answer

  • Voted
  • Oldest
  • Recent
  • Random
  1. Editorial Team
    Editorial Team
    2026-05-14T14:22:31+00:00Added an answer on May 14, 2026 at 2:22 pm

    it’s not a duplicate. Its different.Sort of…

    I finally found the solution. The Entity framework doesnt load the metadata correctly for POCO.

    what you have to do on your OnContextCreated is this:

    databaseContext.MetadataWorkspace.LoadFromAssembly(typeof(Entity).Assembly);

    This will correctly load the metadata and it works…. I need to read into it… but this seems to do the trick.

    http://social.msdn.microsoft.com/Forums/en/adodotnetdataservices/thread/601491ab-9c46-4fdf-88a7-c7392e5dbcdf

    • 0
    • Reply
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
      • Report

Sidebar

Ask A Question

Stats

  • Questions 483k
  • Answers 483k
  • Best Answers 0
  • User 1
  • Popular
  • Answers
  • Editorial Team

    How to approach applying for a job at a company ...

    • 7 Answers
  • Editorial Team

    What is a programmer’s life like?

    • 5 Answers
  • Editorial Team

    How to handle personal stress caused by utterly incompetent and ...

    • 5 Answers
  • Editorial Team
    Editorial Team added an answer If you want to decide on the edit page whether… May 16, 2026 at 6:57 am
  • Editorial Team
    Editorial Team added an answer One option is to use return value of Subscribe: IDisposable… May 16, 2026 at 6:57 am
  • Editorial Team
    Editorial Team added an answer The pop function justs pops but does not return anything.… May 16, 2026 at 6:57 am

Trending Tags

analytics british company computer developers django employee employer english facebook french google interview javascript language life php programmer programs salary

Top Members

Explore

  • Home
  • Add group
  • Groups page
  • Communities
  • Questions
    • New Questions
    • Trending Questions
    • Must read Questions
    • Hot Questions
  • Polls
  • Tags
  • Badges
  • Users
  • Help
  • SEARCH

Footer

© 2021 The Archive Base. All Rights Reserved
With Love by The Archive Base

Insert/edit link

Enter the destination URL

Or link to existing content

    No search term specified. Showing recent items. Search or use up and down arrow keys to select an item.