如何從另一個方法調用正在運行的方法的取消。 時間：2019-05-09 標簽：c#.core 2.2

Question

[HttpPost("WorkHard ")]
public ActionResult WorkHard ()
{
   ///
}

[HttpGet("CancelWorkHard ")]
public void CancelWorkHard ()
{

}

Answer 1

即使我不建議這樣做，這里的代碼可能會給你一個想法：

    private static CancellationTokenSource TokenSource { get; set; }
    private static Int32 Counter { get; set; }

    [HttpPost("WorkHard")]
    public IActionResult WorkHard()
    {
        TokenSource = new CancellationTokenSource();

        _ = Task.Run(async () =>
          {
              while (true)
              {
                  TokenSource.Token.ThrowIfCancellationRequested();
                  await Task.Delay(500);
                  Counter++;
              }
          }, TokenSource.Token);

        return Ok();
    }

    [HttpPost("CancelWorkHard")]
    public IActionResult CancelWorkHard()
    {
        TokenSource.Cancel();
        return Ok(Counter);
    }