Question

我正在生成用于处理不同方法的多个任务。虽然某些方法可以达到目的，但我需要取消该任务。为此，我正在生成CancellationTokenSource并将其分配给每个任务。当任务完成时，我可以取消该任务。

在此实施期间，我收到类似'The CancellationTokenSource has been disposed.'的错误我已经在那里设置了调试器并检查了它的值，但是我无法找到此错误的根本原因。我们如何处理这个错误？我需要您最好的建议。

//Create class for handle cancellationTokenSource with each Task individually
 public class tempTask
 {
    public string symbolName { get; set; }
    public System.Threading.CancellationTokenSource cts { get; set; }
    public Task task { get; set; }
 }

//Declaration of CTS, Binding Object Class
public static System.Threading.CancellationTokenSource _tokenSource = new System.Threading.CancellationTokenSource();
public static Dictionary<string, System.Threading.CancellationTokenSource> test = new Dictionary<string, System.Threading.CancellationTokenSource>();
public static List<tempTask> tempTasks = new List<tempTask>();

// In first method : creating object of CTS and sending as a parameter
_tokenSource = new System.Threading.CancellationTokenSource();
startAddToPosition(_tokenSource, _symbolName);

//In startAddToPosition method : Assigning TokenSource to Task
public static async void startAddToPosition(System.Threading.CancellationTokenSource cts1, string symbolName)
{
   try
   {
      Task t1 = Task.Run(() => Task.Delay(30000, cts1.Token), cts1.Token);

      tempTask tmp = new tempTask
      {
         cts = cts1,
         task = t1,
         symbolName = symbolName
      };
      tempTasksList.Add(tmp);
   }
   catch(Exception ex)
   {
       //Below line throwing an error `'The CancellationTokenSource has been disposed.'

       var symName = test.FirstOrDefault(q => q.Value.Token == ex.CancellationToken).Key;
                generateRealPosition(symName);
   }
}

那么，在处理此问题的代码中我缺少添加的任何部分吗？

如何解决CancellationTokenSource的错误已在c＃中与多个CancellationTokenSource一起处置

0 个答案: