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Editorial Team
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Asked: 2026-05-26T21:21:30+00:00

I had to add a new column to my table so I did that

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I had to add a new column to my table so I did that in the database and then I removed the table from the dbml file and readded the one with the new column. So the column I added was (_isActive bit null allowed) and this messed up my designer file. It has added a duplicate definition of some of the attributes like: private bool isActive and other one as private System.Nullable @_isActive; Also added additional stuff. I had to delete the designer file and reload it with old one. How should I go to make this change in the dbml file?

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1 Answer

  1. Editorial Team

    With Linq-To-SQL I believe you need to use the designer to remove and add a table after you have made a schema change.

    If you edited the code-behind file, those changes can cause problems. There is a reason all the classes there are defiend as partial class

    So, I suspect your best option is to delete your DBML and start again.

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