Parallel Options

Options that configure the operation of methods on the Parallel class.

MaxDegreeOfParallelism

Gets or sets the maximum number of concurrent tasks enabled by this ParallelOptions instance.

ParallelOptions options= new ParallelOptions();
options.MaxDegreeOfParallelism = System.Environment.ProcessorCount;
Parallel.For(
	0,
	9,
	options,
	(i) =>
	{
	    Console.WriteLine("Thread={0}, i={1}", Thread.CurrentThread.ManagedThreadId, i);
	}
);

System.Environment.ProcessorCount - Gets the number of processors available to the current process.

CancellationToken

Gets or sets the CancellationToken associated with this ParallelOptions instance.

CancellationTokenSource cts = new CancellationTokenSource();
ParallelOptions po = new ParallelOptions();
po.CancellationToken = cts.Token;