轉-C#讓枚舉返回字符串

下面的手段是使用給枚舉項打標籤的方式,來返回字符串

下面分別定義一個屬性類,和一個枚舉幫助類

 

[AttributeUsage(AttributeTargets.Field,AllowMultiple = false)]
public sealed class EnumDescriptionAttribute : Attribute
{
    private string description;
    public string Description { get { return description; } }

    public EnumDescriptionAttribute(string description)
        : base()
    {
        this.description = description;
    }
}

public static class EnumHelper
{
    public static string GetDescription(Enum value)
    {
        if (value == null)
        {
            throw new ArgumentException("value");
        }
        string description = value.ToString();
        var fieldInfo = value.GetType().GetField(description);
        var attributes =
            (EnumDescriptionAttribute[]) fieldInfo.GetCustomAttributes(typeof (EnumDescriptionAttribute), false);
        if (attributes != null && attributes.Length > 0)
        {
            description = attributes[0].Description;
        }
        return description;
    }
}

使用舉例:

 

 

enum Week
{
    [EnumDescription("星期一")]
    Monday,
    [EnumDescription("星期二")]
    Tuesday
}

//下面打印結果爲: 星期一
Console.WriteLine(EnuHelper.GetDescription(Week.Monday))