Question

Okay, so I am using linq and thus I have a few “var” types object created dynamically, as in

var Order = CustomerDataContext.Order.Where(e => e.OrderPending)

and many others like this, so the problem is how can I maintain this “var” across method calls, I am using
ThreadPool.QueueUserForWorkItem(ProcessOrder, var) but this method accepts object and I cannot cast the back in parameter back into Order type. Also, since its var it cannot even be declared as static, so that I may maintain state, so what should I do? How should I maintain this var, or if I cannot, then what is the other way to do what I am doing?

Answer 1

Quote from here:

[var] An implicitly typed local variable is strongly typed just as if you had declared the type yourself, but the compiler determines the type.

You don’t maintain var type. in your sample, the Order is probably of type IQueryable. var is just a shortcut so you don’t have to specify the type of variable and let the compiler do it. So you could’ve just written:

IQueryable<Order> Order = CustomerDataContext.Order.Where(e => e.OrderPending)