Comments on: Linq to SQL Quirks Part 2: DeleteOnSubmit and Entity not Attached

By: Hadi Sharifi

Hadi Sharifi — Fri, 24 Jun 2011 12:14:34 +0000

Many many thanks, You are very great developer, You really helped me, All the Best

By: Dave Lowther

Dave Lowther — Wed, 05 Jan 2011 19:07:51 +0000

Thanks, this saved me some (more) misery.

By: Ron

Ron — Thu, 10 Jun 2010 12:09:45 +0000

Great post, really helped me out!

Is this a better way of checking? I’m guessing if the ID field is automatically generated by the DB then checking for a 0 is more efficient but I’m not sure if it’s too safe.

By: Siamak

Siamak — Fri, 23 Oct 2009 07:12:16 +0000

Very well explained, thank you very much for posting this. It helped me to solve my problem.

I just have a suggestion/alternative way about step 2, for checking if entity already exists.
If you don’t have identity field to check for ID, then in general always could do:

Instead of: ‘If ID=0′

Could do: ‘if (DataContext.Table.GetOriginalEntityState(item) == null)’

By: Linq to SQL Quirks Part 3 – Extension to Get Around the Delete Problem | Wizz's Coding Solutions

Tue, 30 Jun 2009 21:34:38 +0000

[...] previous post about problems deleting can be partly handled with an extension method to the Linq to SQL Table(Of [...]