Call context with child threads

gistfile1.cs

CallContext.SetData("key", new Number { N = 1 });
var task1 = Task.Factory.StartNew(() =>
{
	var n = CallContext.GetData("key") as Number;
	n.N++;

	Thread.Sleep(1000);
});
var task2 = Task.Factory.StartNew(() =>
{
	var n = CallContext.GetData("key") as Number;
	n.N++;
	
	Thread.Sleep(1000);
});
Task.WaitAll(task1, task2);
LoggingUtils.TraceMessageF("Result number: {0}", (CallContext.GetData("key") as Number).N);