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Asked: 2026-06-05T00:25:26+00:00

I am trying to update records with linq to sql. The code does not

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I am trying to update records with linq to sql. The code does not throw any errors, but the changes are not getting to the database. I don’t know how to debug this problem. Object tracking is enabled for the datacontext, as suggested here LINQ to SQL database row not updating

I am confident that my datacontext is pointing to the correct database.

        Dim myAverageWeeklyLab As AverageWeeklyLab = (From l In myAlexanderValidation.AverageWeeklyLabs Where l.labname = lab).First
        myAverageWeeklyLab.GracePeriod = standardDeviation  
        myAlexanderValidation.SubmitChanges()  //this should set the gracePeriod field=standardDeviation, but does not

What am I missing? What steps can I take to debug this problem?

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1 Answer

  1. Editorial Team

    Ensure your table as a primary key.

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