有没有一种简单的方法来一个C＃枚举转换为字符串，然后再返回？ [英] Is there an easy way to convert a c# enum to a string, and back again?

问题描述

我需要将列表枚举值转换为单个字符串存储在我的db;然后在从数据库检索时再次转换回。

I need to convert a List of enums values to a single string to store in my db; then convert back again when I retrieve from the database.

每个枚举的值目前是一个简单的整数，所以感觉有点过分，创建一个额外的表来处理这个。

Each enum's value is currently a simple integer, so it feels a bit overkill to create an extra table to deal with this.

所以，在下面的例子中，如果用户选择Mother，Father和Sister，那么存储在数据库中的值将是0,1,3。

So, in the example below, if the user selects Mother, Father and Sister, then the value stored in the database will be "0,1,3"

  public enum MyEnum
    {
        Mother = 0,
        Father = 1,
        Gran = 2,
        Sister = 3,
        Brother = 4
    }

所以不知道有没有一个漂亮的开箱即用的方式来做到这一点 - 我找不到任何明显的时候google狩猎！

I'm new to c#, so not sure if there is a nice out-the-box way to do this - I couldn't find anything obvious when google hunting!

提前干杯:)
- L

Cheers in advance :) - L

推荐答案

以下将通过0,1,3

The following will convert back and forth between an array of Enum values via "0,1,3" as requested:

MyEnum[] selection = { MyEnum.Mother, MyEnum.Father, MyEnum.Sister };

string str = string.Join(",", selection.Cast<int>());

MyEnum[] enm = str.Split(',').Select(s => int.Parse(s)).Cast<MyEnum>().ToArray();

这篇关于有没有一种简单的方法来一个C＃枚举转换为字符串，然后再返回？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！