将字符串转换为枚举

我正在读取文件内容，并在像这样的确切位置获取字符串

 string fileContentMessage = File.ReadAllText(filename).Substring(411, 3);

输出将始终是 Ok或 Err

另一边我有 MyObject，它有像这样的 ContentEnum

public class MyObject


{
public enum ContentEnum { Ok = 1, Err = 2 };
public ContentEnum Content { get; set; }
}

现在，在客户端，我想使用这样的代码(将字符串 fileContentMessage强制转换为 Content属性)

string fileContentMessage = File.ReadAllText(filename).Substring(411, 3);


MyObject myObj = new MyObject ()
{
Content = /// ///,
};

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最佳答案

Use Enum.Parse().

var content = (ContentEnum)Enum.Parse(typeof(ContentEnum), fileContentMessage);

小开

Have a look at using something like

Enum.TryParse

Converts the string representation of the name or numeric value of one or more enumerated constants to an equivalent enumerated object. A parameter specifies whether the operation is case-sensitive. The return value indicates whether the conversion succeeded.

Enum.Parse

Converts the string representation of the name or numeric value of one or more enumerated constants to an equivalent enumerated object.

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As an extra, you can take the Enum.Parse answers already provided and put them in an easy-to-use static method in a helper class.

public static T ParseEnum<T>(string value)
{
return (T)Enum.Parse(typeof(T), value, ignoreCase: true);
}

And use it like so:

{
Content = ParseEnum<ContentEnum>(fileContentMessage);
};

Especially helpful if you have lots of (different) Enums to parse.

小开

.NET 4.0+ has a generic Enum.TryParse

ContentEnum content;
Enum.TryParse(fileContentMessage, out content);