Executes a for (For in Visual Basic) loop with 64-bit indexes in which iterations may run in parallel.
A structure that contains information about which portion of the loop completed.
The body delegate is invoked once for each value in the iteration range (fromInclusive, toExclusive). It is provided with the iteration count (long) as a parameter.
If fromInclusive is greater than or equal to toExclusive, the method returns immediately without performing any iterations.