C＃中的整数反序列化枚举

本文介绍了C＃中的整数反序列化枚举的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

是否有可能从C＃一个int反序列化的枚举。例如如果我有下面的类：

Is it possible to deserialize an enum from an int in c#. e.g. If I have the following class:

class Employee { public string Name { get; set;} public int EmployeeTypeID { get; set;} }

我可以轻松地从XML创建此

I can easily create this from XML

<Employee> <Name>Joe Bloggs</Name> <EmployeeTypeID>1</EmployeeTypeID> </Employee>

使用这样的事情：

using something like this:

Employee employee = (Employee)new XmlSerializer(typeof(Employee)).Deserialize(XmlReader);

通过参与很少的工作，这让我使用，我可以养活一个选择命令，连接字符串和类型用于所有数据库对象和检索对象的数组，而无需任何进一步的映射一个通用的服务。不过，我已经完蛋与枚举。现在假设，而不是作为一个整数EmployeeType是一个枚举：

With very little work involved, this allows me to use one generic service that I can use for all database objects by feeding a select command, connection string and a type in to and retrieve an array of objects without any need for further mapping. However I have come unstuck with enums. Supposing now instead of being an integer EmployeeType is an enum:

public enum EmployeeTypeEnum { Admin = 1, Sales = 2 }

所以我的班变成了：

so my class becomes:

class Employee { public string Name { get; set;} public EmployeeTypeEnum EmployeeTypeID { get; set;} }

我可以使用相同的XML和使C＃认识到EmployeeTypeID在XML的int值应与枚举的int值对应？类似的还有其他的问题在那里，但没有有一个非常满意的答案是很旧，而且涉及大规模改变code。我希望有一个更好的解决办法...

Can I use the same XML and make c# recognise that the int value of EmployeeTypeID in the xml should correspond with the int value of the enum? There are other questions similar out there, but none have a very satisfactory answer are quite old, and involve wholesale changes to code. I am hoping for a better solution...

作为一个可能的单独的说明（略预期一些回应的），用枚举这个做法最好避免？我应该使用键 - 值对？我将总是使用键 - 值对（或类似）是否有可能是变化的，但在这种情况下EmployeeType是固定的，永远不会改变。

As a possible separate note (and slightly in anticipation of some responses), is using enums for this a practise best avoided? Should I be using Key-Value pairs? I would always use Key-value pairs (or similar) if there were likely to be changes, but in this case EmployeeType is fixed and will never change.

推荐答案

理论上的（=我还没有尝试过），添加 XmlEnum将属性，以你的枚举值应该做的伎俩：

Theoretically (= I haven't tried it), adding the XmlEnum attribute to your enum values should do the trick:

public enum EmployeeTypeEnum { [XmlEnum("1")] Admin = 1, [XmlEnum("2")] Sales = 2 }

这告诉XmlSerializer的是EmployeeTypeEnum.Admin的价值是被序列化为字符串 1 的（反之亦然）的（这是你需要）。

This tells XmlSerializer that a value of EmployeeTypeEnum.Admin is to be serialized as the string 1 and vice-versa (which is what you need).

关于你的边注：我没有看到这里使用枚举是一个问题。如果在数据库中的值是整数，并且有固定含义，枚举是一个很好的解决方案，此外，作为一个文件，以数据库值。

Regarding your side note: I don't see using enums here as a problem. If the values in the database are integers and have a fixed meaning, enums are a good solution and, in addition, serve as a documentation to the database values.