Possible Duplicate:
In C#, why can't an anonymous method contain a yield statement?
I have this code:
Func<IEnumerable<int>> allNumbers = ()=> new []{1,2,3};
foreach (var number in allNumbers())
Console.WriteLine(number);
But i would like (and has sense) to do somthing like this:
int i = 0;
Func<IEnumerable<int>> allNumbers = () => {yield return ++i;};
foreach (var number in allNumbers())
Console.WriteLine(number);
and i get this compile error: "The yield statement cannot be used inside an anonymous method or lambda expression"
So why i can't use yield returns (lazy things) inside c# lambda expressions?
