如何在C＃中获得像0x80131904这样的eccor代码 [英] How to get eccor code like 0x80131904 in C#

问题描述

我想在c＃exception中找出错误代码，例如 - 0x80131904，

ex.Message

ex.InnerException

ex。来源

ex.StackTrace



但需要获取错误代码



我尝试过：



ex.Message

ex.InnerException

ex.Source

ex.StackTrace

I want to find out error code in c# exception , eg- 0x80131904,
ex.Message
ex.InnerException
ex.Source
ex.StackTrace

but need to get the error code

What I have tried:

ex.Message
ex.InnerException
ex.Source
ex.StackTrace

推荐答案

如果您有C＃异常类（系统） [ ^ ]实例使用 Exception.HResult属性（系统） [ ^ ]获取错误代码。

If you have a C# Exception Class (System)[^] instance use the Exception.HResult Property (System)[^] to get the error code.

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异常没有错误代码 - 错误代码是一种更老，更不友好，不太灵活的方式来报告应用程序的问题。

在过去，应用程序要小得多，并且空间非常宝贵 - 因此错误被安装到一个紧凑的空间--32位 - 因此只是一个数字 - 为了以可理解的方式向用户呈现，使用查找表（通常来自文件）从错误代码中获取人类可读的字符串。



像C＃这样的现代语言使用Exceptions，它是基于类的，包含人类可读（大多数）字符串，可以直接显示给用户。

异常有不同的类型：异常是基类，但你可以捕获SqlException，ApplicationException和一大堆其他分组异常，使你的代码更友好，更可读。



没有系统可以将异常转换为错误代码。

Exceptions don't have error codes - error codes are a much older, less friendly, less flexible way to report a problem with an application.
In the old days, apps were a lot smaller, and space was at a premium - so the error was fitted into a compact space - 32 bits - and as a result was "just a number" - in order to present that to the user in an understandable way, a lookup table (usually from a file) was used to get a human readable string from the error code.

Modern languages like C# work with Exceptions which are class based and contain human readable (mostly) strings which are ready for display to the user directly.
Exceptions come in different types: Exception is the base class, but you can catch SqlException, ApplicationException, and a whole host of other "grouped" exceptions to make your code both more friendly and more readable.

There is no system to convert an Exception to an error code.

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