如何在 C# 中将字符串转换为 Flags 枚举格式

Question

我有这个枚举：

[Flags]
public enum Countries
{
    None    = 0,
    USA     = 1,
    Mexico  = 2,
    Canada  = 4,
    Brazil  = 8,
    Chile   = 16
}

我收到这样的输入字符串：

string selectedCountries = "Usa, Brazil, Chile";

如何将其（在 C# 中）转换回：

var myCountries = Countries.Usa | Countries.Brazil | Countries.Chile;

Answer 1

使用Enum.Parse。

例如Countries c = (Countries)Enum.Parse(typeof(Countries), "Usa, Brazil...");