title: Task List how can I Stop task C#
body: <p>How can I stop tasks in the list to realize once again. </p>
  
  <pre><code>for (f = 0; f &lt; 3; f++)
  {
      list1.ForEach(t =&gt; t.Start());
      list1.ForEach(t =&gt; t.Wait());
  
      Task.WaitAll(list1.ToArray());
  
      //here is problem
      list1.ForEach(t =&gt; t.Cancel());
  }
  </code></pre>