C# - finally 子句中的异常处理

Question

标题有点误导，但这个问题对我来说似乎很简单。我有 try-catch-finally block 。我只想在 try block 中抛出异常时才执行 finally block 中的代码。现在的代码结构是:

try
{
  //Do some stuff
}
catch (Exception ex)
{
  //Handle the exception
}
finally
{
  //execute the code only if exception was thrown.
}

现在我能想到的唯一解决方案是设置一个标志，例如:

try
{
  bool IsExceptionThrown = false;
  //Do some stuff
}
catch (Exception ex)
{
  IsExceptionThrown = true;
  //Handle the exception   
}
finally
{
if (IsExceptionThrown == true)
  {
  //execute the code only if exception was thrown.
  }
}

并不是说我在这方面看到了什么不好的地方，而是想知道是否有另一种(更好的)方法来检查是否存在抛出的异常？

Answer 1

比如:

try
{
    // Do some stuff
}
catch (Exception ex)
{
    // Handle the exception
    // Execute the code only if exception was thrown.
}
finally
{
    // This code will always be executed
}

这就是 Catch block 的用途!