可能是重复问题:
设置操作的超时时间
如何在C#中为一行代码设置超时时间。
例如
RunThisLine(SomeMethod(Some Input), TimeSpan.FromSeconds(10))
使用10秒的超时时间运行SomeMethod
。
提前致谢。
你可以使用任务并行库(TPL)。更确切地说,你可以使用Task.Wait(TimeSpan)
:
using System.Threading.Tasks;
var task = Task.Run(() => SomeMethod(input));
if (task.Wait(TimeSpan.FromSeconds(10)))
return task.Result;
else
throw new Exception("Timed out");
SomeMethod
的结果将会在task.Result
变量中。谢谢。 - HosseinCancellationToken
并非必要。Wait
有一个重载版本没有token
,可以正常工作。 - trapickipublic void TimeoutExample()
{
IAsyncResult result;
Action action = () =>
{
// Your code here
};
result = action.BeginInvoke(null, null);
if (result.AsyncWaitHandle.WaitOne(10000))
Console.WriteLine("Method successful.");
else
Console.WriteLine("Method timed out.");
}
var response = RunTaskWithTimeout<ReturnType>(
(Func<ReturnType>)delegate { return SomeMethod(someInput); }, 30);
/// <summary>
/// Generic method to run a task on a background thread with a specific timeout, if the task fails,
/// notifies a user
/// </summary>
/// <typeparam name="T">Return type of function</typeparam>
/// <param name="TaskAction">Function delegate for task to perform</param>
/// <param name="TimeoutSeconds">Time to allow before task times out</param>
/// <returns></returns>
private T RunTaskWithTimeout<T>(Func<T> TaskAction, int TimeoutSeconds)
{
Task<T> backgroundTask;
try
{
backgroundTask = Task.Factory.StartNew(TaskAction);
backgroundTask.Wait(new TimeSpan(0, 0, TimeoutSeconds));
}
catch (AggregateException ex)
{
// task failed
var failMessage = ex.Flatten().InnerException.Message);
return default(T);
}
catch (Exception ex)
{
// task failed
var failMessage = ex.Message;
return default(T);
}
if (!backgroundTask.IsCompleted)
{
// task timed out
return default(T);
}
// task succeeded
return backgroundTask.Result;
}