取消任务内部的异步任务

Question

hi this is may main function

    static void Main(string[] args)
    {   
        foreach(var user in sommodel)
        {
             AsyncContext.Run(() => sf.StartFollowState(5));
        }
    }

and this is task

public class StartFollow
{
    public async Task StartFollowState(long iuid)
    {
        foreach(var user in sommodel)
        {
             if(somthing)
             {
                  //cancel a task
             }
              //do some
        }
        foreach(var user in sommodel)
        {
              //do some
        }
    }
}

as you can see in the task I want to stop or cancel the task in that foreach how can I do that ?

Answer 1

Unfortunately one does not simply cancel a Task. What you could do is 'return' out of the method so that the Task runs into nirvana and then just wait for the Garbage Collector to do the work.

public class StartFollow
{
    public async Task StartFollowState(long iuid)
    {
        foreach(var user in sommodel)
        {
             if(somthing)
             {
                  //cancel a task
                  return;    
             }

             //do some
        }

        foreach(var user in sommodel)
        {
              //do some
        }
    }
}