Linq2SQL is fast becoming one of my favorite frameworks for throwing quick sites together. I used to use a lot of object relational mappers but this is free and built in so .. yay :)

I’ve noticed recently a lack of understanding in trying to return a single entity from a collection. Many times when you fetch data you know there will only be 1 row but you get a collection or have to request First from an IQueryable type.

Lets say you have a Customers table. You want to fetch 1 row of type Customer.

Customer myCustomer = (from c in dataContext.Customers
                      where c.CustomerId = 1
                      select c).Single<Customer> ();           

myCustomer will now be of type Customer – nice and clean :)

A good all around LINQ book, not just L2SQL but Link to everything.

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