c# - STA 线程异常传播

Question

我有一个必须作为 STA 运行的函数，我想将它的异常传播到调用线程。在这里:

public void ExceptionBePropagatedThroughHere()
{
  Thread thread = new Thread(TheSTAThread);
  thread.SetApartmentState(ApartmentState.STA);
  thread.Start();
  thread.Join();
}

public void MainFunction()
{
  try
  {
    ExceptionBePropagatedThroughHere();
  }
  catch(Exception e)
  {
     //will not hit here
  }
}

将 STA 属性放在“MainFunction”上不是此处的选项。我注意到如果我使用的是 Task，try catch on task join 会将异常传播到调用线程，但是我不能将任务指定为 STA。

问题是如何将作为 STA 运行的异常传播到上述示例中的“MainFunction”？

提前致谢。

Answer 1

我听从了 Hans 的建议，解决方案如下所示，不需要触发任何事件。

private Exception _exception;
public void ExceptionBePropagatedThroughHere()
{
  Thread thread = new Thread(TheSTAThread);Thread thread = new Thread(TheSTAThread);
  thread.SetApartmentState(ApartmentState.STA);
  thread.Start();
  thread.Join();
  if(_exception != null)
    throw new Exception("STA thread failed", _exception);
}

private void TheSTAThread()
{
  try
  {
    //do the stuff
  }
  catch (Exception ex)
  {
    _exception = ex;
  }
}
public void MainFunction()
{
  try
  {
    ExceptionBePropagatedThroughHere();
  }
  catch(Exception e)
  {
     //will not hit here
  }
}