Question

var selectedProducts = from p in products
                       where p.Category == 1
                       select p;

var selectedProducts =  products.Where(p=>p.Category==1) ;

The above 2 statements seems to produce same result.

Then what is the difference(some times internally)?

Which one is efficient more?

Answer 1

There is no difference. The first (the query expression) is translated to the second by the compiler, and has no impact on run time.

See also:

• How query expressions work – By Jon Skeet
• Query transformations are syntactic – By Eric Lippert