C# 将任务线程置于前台

Question

我正在使用 Task 通过不同的线程创建和执行一些操作，一旦操作完成，我也会回调被调用。

 System.Threading.Tasks.Task.Factory.StartNew(() =>
                   this._httpService.CreateRecord(new Uri(Configuration.Current.CreateRecordUrl), httpObj)).ContinueWith(
                   (response) =>
                   {
                       if (!response.IsFaulted)
                       {
                           if (httpObj.CallBack != null)
                           {
                               httpObj.CallBack(response.Result);
                           }
                       }
                       else {
                           this._logger.Error("There was some error which causes the task to fail");


                       }
                   });

我的控制台应用程序的主线程不等待任务线程完成，因为它是后台线程。如何使任务线程成为前台线程？

谢谢

Answer 1

您应该等待主线程中的任务完成。

将您的代码更改为

var task =  System.Threading.Tasks.Task.Factory.StartNew(() =>
    this._httpService.CreateRecord(new Uri(Configuration.Current.CreateRecordUrl), httpObj)).ContinueWith(
        (response) =>
        {
            if (!response.IsFaulted)
            {
                if (httpObj.CallBack != null)
                {
                    httpObj.CallBack(response.Result);
                }
            }
            else {
                this._logger.Error("There was some error which causes the task to field");
            }
        });
task.Wait();  // Wait till your Task has finished.

Wait() 方法有一些重载来指定等待多长时间。如果任务执行由于取消异常而失败，您还必须添加一些异常处理。