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Home/ Questions/Q 8277179
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Editorial Team
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Editorial Team
Asked: June 8, 20262026-06-08T08:36:43+00:00 2026-06-08T08:36:43+00:00

I have a table mapped in Entity Framework which works great adding/updating and deleting

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I have a table mapped in Entity Framework which works great adding/updating and deleting records. I removed a column from SQL sever called “Category”, then re-mapped my entity in the model. This worked fine, the column disappeared.

Now, I run a query on the table to update a row and get the same error, invalid column “Category”.

This has been removed from the SQL table and removed from the Entity, so is it still looking for this damn column when I run the following code??

using (Entities db = new Entities())
                { 
                       var Voucher = (from vouchers in db.Vouchers
                                 where vouchers.ID == ID
                                 select vouchers).FirstOrDefault();

                       if (Voucher != null)
                       {
                           Voucher.Status = (int)Vouchers.UI.Enums.VoucherStatus.Removed;                           
                           ret = db.SaveChanges() == 1;
                       }
                } 

Here is the error:

Invalid column name ‘Category’.

I have cleaned the code, built, re-built, and updated the enitties about a 100 times.

Does anyone have any ideas?

Thanks

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  1. Editorial Team
    Editorial Team
    2026-06-08T08:36:45+00:00Added an answer on June 8, 2026 at 8:36 am

    Remove the table from the *.EDMX file, and then add that table again to the *.EDMX file

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