public void ContinueWithTest02()
{
Task <string> task = Task.Run <string>(() => PiCalculator.Calculate(10));
// 本程序中 faultedTask 和 canceledTask 不可能发生，所以不可以等待。
Task faultedTask = task.ContinueWith((antecedentTask) =>
{
Trace.Assert(task.IsFaulted);
Console.WriteLine("Task State:Faulted");
}, TaskContinuationOptions.OnlyOnFaulted);
Task canceledTask = task.ContinueWith((antecedentTask) =>
{
Trace.Assert(task.IsCanceled);
Console.WriteLine("Task State:Canceled");
}, TaskContinuationOptions.OnlyOnCanceled);
Task completedTask = task.ContinueWith((antecedentTask) =>
{
Trace.Assert(task.IsCompleted);
Console.WriteLine("Task State:Completed");
}, TaskContinuationOptions.OnlyOnRanToCompletion);
completedTask.Wait();
}
public void RunTest01()
{
Task <string> task = Task.Run <string>(() => PiCalculator.Calculate(100));
foreach (var busySymbols in Utility.BusySymbols())
{
if (task.IsCompleted)
{
Console.Write($"IsCompleted:{task.IsCompleted}");
break;
}
Console.Write(busySymbols);
}
Console.WriteLine();
Console.WriteLine(task.Result);
System.Diagnostics.Trace.Assert(task.IsCompleted);
}