Is it Linq or Lambda?

Question

I know that this is Linq:

var _Results = from item in _List
                where item.Value == 1
                select item;

And I know t

Answer 1

Both are Linq. The second one is using Lambdas.

Lambdas are the inline method type things that you are passing as a parameter to the Where function in the second example.

The difference between those two syntaxes is purely syntactic. The second linq style using method calls is how it works under the hood. The first is meant to be more user friendly/easier and the compiler converts it to method calls behind the scenes. They should work the same for any given query though of course the compiler may choose a sligthly different interpretation of a complicated linq query than you would when converting to method style.

This msdn article may be of interest too: LINQ Query Syntax versus Method Syntax. Of particular relevance is: "In general, we recommend query syntax because it is usually simpler and more readable; however there is no semantic difference between method syntax and query syntax."