Question

IEnumerable<Department> myQuery = (from D in myContext.Departments orderby D.DeptName select D);

var myQuery = (from D in myContext.Departments orderby D.DeptName select D);

What is the difference between these two statements above? In my little asp.net/C#/ EF4.0 app I can write them either way, and as far as how I want to use them, they both work, but there has to be a reason why I would choose one over the other?

Answer 1

(from D in myContext.Departments orderby D.DeptName select D);

returns an object of type IQueriable<Department> which in turn implements IEnumerable<Department>

while you use the var keyword in here the compiler replace it with IQueriable<Department>