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Asked: 2026-06-18T04:18:19+00:00

I have table(and also entity in Entity Data Model) Person with following fields: Name

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I have table(and also entity in Entity Data Model) Person with following fields:

Name              Type
SocialID          String      
FirstName         String
LastName          String

which SocialID is Primary Key. I want to update value of SocialID for each record. However when i try to update this field in Entity Framework I get following error: 

The property 'SocialID' is part of the object's key information and cannot 
be modified.

The code that i get above error is:

foreach (var p in Entity.Persons)
{
   p.SocialID= p.SocialID + "00";
   Entity.SaveChanges();
}

How I can do this??

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1 Answer

  1. Editorial Team

    As mentioned by the others, you can’t do it in code. You will have to make your update in SQL. Either in a migration or directly in SQL Server Management Studio (or the equivalent if you’re using a different database).

    UPDATE Person -- Or 'Persons' if that's what your table is called
SET SocialID = SocialID + '00'

    It will require a lot more work than this if you have other tables use this column as a foreign key (you’ll have to drop the constraints first — on all tables that reference your primary key — then fix the data and recreate the constraints). Or as Moe said in the comments, you can set your foreign keys to cascade on update.

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