Question

所以我在创建用户的地方有这个功能控制器批量创建用户后，我想发送短信/电子邮件确认。但是电子邮件的短信处理过程很慢。（由于我使用第三方发送短信，因此我无法批量发送短信）因此，我想要它，以便一旦它创建了用户，它就返回UI（模型），但其他线程仍在工作发送短信/电子邮件功能。请帮忙。非常感谢

例如：

public async Task<AjaxReturn> ImportUsers(Users[] users)
{
  //there are lot of checks here which i have removed for showing 
  //save all the users at a time 
  var saved = await _accserver.SaveBulkUser(applicationUsers, userInfo.AccountId);

  //this below method i want to call but dont want to wait till its finish,
  // I want it to continue sending sms/emails
  SendUserConfirmation(goesAllsavedUsersHere);

  return AjaxReturnHelper.GetAjaxReturn(!isAllSaved) ? ResultTypes.Error : ResultTypes.Success);
}

private async void SendUserConfirmation(UsersListhere)
{
  foreach(var user in userlist)
  {
    await _messageservice.sendsms(.....);

    await _messageservice.sendemail(.....);
  }
}

Answer 1

我有一些建议：

请勿使用async void，而应使用async Task。

将foreach(var user in userlist)更改为Parallel.ForEach(...)，因为这些调用可以是异步的

使用回调函数，并通过SignalR将通知发送到WebUI，然后显示一条消息

public async Task<AjaxReturn> ImportUsers(Users[] users)
{
    //there are lot of checks here which i have removed for showing 
    //save all the users at a time 
    var saved = await _accserver.SaveBulkUser(applicationUsers, userInfo.AccountId);

    //this below method i want to call but dont want to wait till its finish,
    // I want it to continue sending sms/emails
    SendUserConfirmation(goesAllsavedUsersHere, () =>
    {
        // do something here
        // you can try to call a SignalR request to UI and UI shows a message
    });

    return AjaxReturnHelper.GetAjaxReturn(!isAllSaved) ? ResultTypes.Error : ResultTypes.Success);
}

private async Task SendUserConfirmation(UsersListhere, Action doSomethingsAfterSendUserConfirmation)
{
    Parallel.ForEach(userlist, async (user) =>
    {
        await _messageservice.sendsms(.....);

        await _messageservice.sendemail(.....);
    });

    doSomethingsAfterSendUserConfirmation();
}

如何从后台运行的Controller调用功能

1 个答案: