有一个在任务中执行的进程。我不希望同时执行其中的一个以上。
这是检查任务是否已在运行的正确方法吗?
private Task task;
public void StartTask()
{
if (task != null && (task.Status == TaskStatus.Running || task.Status == TaskStatus.WaitingToRun || task.Status == TaskStatus.WaitingForActivation))
{
Logger.Log("Task has attempted to start while already running");
}
else
{
Logger.Log("Task has began");
task = Task.Factory.StartNew(() =>
{
// Stuff
});
}
}
发布于 2013-10-05 22:21:17
private Task task;
public void StartTask()
{
if ((task != null) && (task.IsCompleted == false ||
task.Status == TaskStatus.Running ||
task.Status == TaskStatus.WaitingToRun ||
task.Status == TaskStatus.WaitingForActivation))
{
Logger.Log("Task is already running");
}
else
{
task = Task.Factory.StartNew(() =>
{
Logger.Log("Task has been started");
// Do other things here
});
}
}
发布于 2015-12-18 16:53:44
您可以使用以下命令进行检查:
if ((taskX == null) || (taskX.IsCompleted))
{
// start Task
taskX.Start();
//or
taskX = task.Factory.StartNew(() =>
{
//??
}
}
发布于 2018-09-10 14:48:59
更简单:
if (task?.IsCompleted ?? true)
task = TaskFunction();
https://stackoverflow.com/questions/19197376
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