Task.Factory.StartNew "action" argument and higher level local variables

Question

Consider this:

void StartUpdate(DataRequest dataRequest)
{
    Task.Factory.StartNew(request => {... do something with "request" ...}, 
        dataRequest);
}

Now, my question: can I use dataRequest inside the lambda expression, instead of passing it as second parameter to StartNew method? My concern is - that method will be executed on a different thread and I'm not sure if dataRequest would keep its state when used there.

Answer 1

Yes, you can.
This is called a Closure; it's a very powerful feature.

The thread-safety, or lack thereof, will be no different.
Whether you get the instance through the closure or through a StartNew parameter, it's still the same object. (Unless it's a struct, which would be indescribably evil)