异步方法MVC中的异常处理。 如何为使用await的方法使用try catch？

Question

     [HttpPost]
 public async Task<JsonResult>    
    {
     await sendNotification(responce);
    }

I want to catch exception occured in sendnotification method. How can I call the same using Task.Factory ??

Answer 1

You just write a try / catch block, as such:

[HttpPost]
public async Task<JsonResult>    
{
  try
  {
    await sendNotification(responce);
  }
  catch (Exception ex)
  {
    ...
  }
}

You don't need Task.Factory for this.

Answer 2

Exception Handling of sendNotification() task depends on how the task is coded. In one way, above Stephen Cleary's answer is right but not sure it fixes your issue.

You can go through below easy understandable articles to understand Exception Handling in Async programming...

Basic exception handling in Asynchronious programming in C#.

Exception object behaves differently while handling exceptions in parallel tasks in Asynchronous programming.

Answer 3

Also look into below link..

Handling the AggregateException using Handle method in Asynchronous programming.