C＃的try {}赶上{} [英] C# try {} catch {}

问题描述

您好，感谢您的阅读。即时编程和C＃和socket编程的新手。在我的代码我尝试和catch问题，在我的应用程序提供故障tolarence。以下内容：

hi and thanks for reading. im a newbie in programming and C# and sockets programming. in my code i try and catch problems to provide fault tolarence in my app. the following:

        catch (ArgumentNullException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents("Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
        catch (EncoderFallbackException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents("Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
        catch (SocketException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents("Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
        catch (ArgumentOutOfRangeException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents("Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }
        catch (ObjectDisposedException e)
        {
            OnNetworkEvents eventArgs = new OnNetworkEvents("Network Unavailable", e.Message);
            OnUpdateNetworkStatusMessage(this, eventArgs);
        }

我只是想知道如果我可以用一个单一的替换此重复的代码：

i was just wondering if i can replace this repetitive code with one single:

catch (Exception e) { handle here}

将这项工作？

再次感谢。

推荐答案

没有，永远也赶不上的System.Exception 。我感觉今天像断了纪录，但我真的不能强调这一点。你不能接受 OutOfMemoryException异常或 AccessViolationException ，所以不要抓住它！

No, never catch System.Exception. I feel like a broken record today, but I really can't stress this enough. You cannot handle an OutOfMemoryException or AccessViolationException, so don't catch it!

对于示例代码，我有强烈的怀疑，一个 ArgumentNullException 或 ArgumentOutOfRange 例外将对应网络错误。如果这样做，可能意味着真正的组件应该的再追这个异常，是不是。

As for the example code, I have strong doubts that an ArgumentNullException or ArgumentOutOfRange exception would correspond to a network error. If it does, it likely means that the component that really should be catching this exception, isn't.

容错不意思是吃的每一例外，这样应用程序不会崩溃。 - 这意味着实际知道的东西，可以去错了的正确处理的他们

"Fault tolerance" does not mean "eat every exception so the app doesn't crash" - it means actually knowing the things that can go wrong and handling them correctly.

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