.net - 返回最后一 block ……为什么不呢？

Question

作为MSDN mentions:

The code in a Finally block runs after a Return statement in a Try or Catch block is encountered, but before that Return statement executes. In this situation, a Return statement in the Finally block executes before the initial Return statement. This gives a different return value. To prevent this potentially confusing situation, avoid using Return statements in Finally blocks.

由于我对本说明的了解不多，因此我举一个例子(VB.NET，我认为在C#中情况类似):

Try
    HugeOp()
    Return "OK"
Catch
    Return "NOK"
Finally
    Return "Finally"
End Try

现在，为什么在C#和VB.NET中都应该使用非法的？

Answer 1

这是非法的，因为当您到达Finally块时，已经定义了要返回的值(如果一切顺利，则为“OK”；如果捕获到异常，则为“NOK”)。如果您能够从Finally块返回一个不同的值，则无论上面的指令结果如何，都将始终返回该值。只是没有意义...