我有以下代码:
List<Task> tasks = new List<Task>();
tasks.Add(Task.Factory.StartNew(() =>
{
rs1.Process();
}).ContinueWith((previousTask) =>
{
rs5.Process();
rs6.Process();
}));
tasks.Add(Task.Factory.StartNew(() =>
{
rs2.Process();
}));
tasks.Add(Task.Factory.StartNew(() =>
{
rs3.Process();
}));
try
{
Task.WaitAll(tasks.ToArray());
}
catch (AggregateException e)
{
}
当rs1.Process结束时()rs5.Process()和rs6.Process()运行同步。如何异步运行它们。
如果我使用内部任务,则无法等待
答案 0 :(得分:0)
您需要一个内部任务列表:
tasks.Add(Task.Factory.StartNew(() =>
{
rs1.Process();
}).ContinueWith((previousTask) =>
{
List<Task> loInnerTasks = new List<Task>();
loInnerTasks.Add(Task.Run(() => rs5.Process()));
loInnerTasks.Add(Task.Run(() => rs6.Process()));
Task.WaitAll(loInnerTasks.ToArray());
}));
更新(使用TaskCreationOptions.AttachedToParent
):
tasks.Add(Task.Factory.StartNew(() =>
{
rs1.Process();
}).ContinueWith((previousTask) =>
{
Task.Factory.StartNew(() => rs5.Process(), TaskCreationOptions.AttachedToParent);
Task.Factory.StartNew(() => rs6.Process(), TaskCreationOptions.AttachedToParent);
}));
也应该以两种方式捕获例外情况。