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Linq-To-Sql was discontinued by Microsoft.

They recommend using Entity Framework.

It would not be a huge overhaul since you linq code us still valid. You just need to recreate you data model.

For .Net 3.5 you can use EF v1.

Try to download Microsoft .NET Framework 3.5 Service Pack 1 from http://www.microsoft.com/download/en/details.aspx?id=22
It should include The First version of Entity Framework (EFv1) as stated on http://en.wikipedia.org/wiki/ADO.NET_Entity_Framework.


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