private static void Method()
{
// Create an ActionBlock<int> object that prints its input
// and throws ArgumentOutOfRangeException if the input
// is less than zero.
var throwIfNegative = new ActionBlock <int>(n =>
{
Console.WriteLine("n = {0}", n);
if (n < 0)
{
throw new ArgumentOutOfRangeException();
}
});
ITargetBlock <int> target;
target = new ActionBlock <int>(o => { });
var source = new BufferBlock <int>();
var result = target.OfferMessage(new DataflowMessageHeader(), 1, source, true);
if (result == DataflowMessageStatus.Accepted)
{
}
// Post values to the block.
throwIfNegative.Post(0);
throwIfNegative.Post(-1);
throwIfNegative.Post(1);
throwIfNegative.Post(-2);
throwIfNegative.Complete();
// Wait for completion in a try/catch block.
try
{
throwIfNegative.Completion.Wait();
}
catch (AggregateException ae)
{
// If an unhandled exception occurs during dataflow processing, all
// exceptions are propagated through an AggregateException object.
ae.Handle(e =>
{
Console.WriteLine("Encountered {0}: {1}",
e.GetType().Name, e.Message);
return(true);
});
}
}