一次捕获多个异常？

问题：

It is discouraged to simply catch System.Exception . 不建议仅捕获System.Exception 。 Instead, only the "known" exceptions should be caught. 相反，仅应捕获“已知”异常。

Now, this sometimes leads to unneccessary repetitive code, for example: 现在，这有时会导致不必要的重复代码，例如：

try
{
    WebId = new Guid(queryString["web"]);
}
catch (FormatException)
{
    WebId = Guid.Empty;
}
catch (OverflowException)
{
    WebId = Guid.Empty;
}

I wonder: Is there a way to catch both exceptions and only call the WebId = Guid.Empty call once? 我想知道：有没有一种方法可以捕获两个异常，并且只调用一次WebId = Guid.Empty ？

The given example is rather simple, as it's only a GUID . 给定的示例非常简单，因为它只是一个GUID 。 But imagine code where you modify an object multiple times, and if one of the manipulations fail in an expected way, you want to "reset" the object . 但是，请想象一下代码中多次修改对象的情况，如果其中一种操作以预期的方式失败，则您想“重置”该object 。 However, if there is an unexpected exception, I still want to throw that higher. 但是，如果有意外的例外，我仍然想将其提高。

解决方案：

参考一： https://stackoom.com/question/ZO7/一次捕获多个异常
参考二： https://oldbug.net/q/ZO7/Catch-multiple-exceptions-at-once

来源：oschina

链接：https://my.oschina.net/u/4432649/blog/4466286

标签

Imagine