C# 扩展方法——获得枚举的Description

/// <summary>
/// 扩展方法，获得枚举的Description
/// </summary>
/// <param name="value">枚举值</param>
/// <param name="nameInstead">当枚举值没有定义DescriptionAttribute，是否使用枚举名代替，默认是使用</param>
/// <returns>枚举的Description</returns>
public static string GetDescription(this Enum value, Boolean nameInstead = true)
{
    Type type = value.GetType();
    string name = Enum.GetName(type, value);
    if (name == null)
    {
        return null;
    }
 
    FieldInfo field = type.GetField(name);
    DescriptionAttribute attribute = System.Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;
 
    if (attribute == null && nameInstead == true)
    {
        return name;
    }
    return attribute?.Description;
}

public enum ModuleType
 {
     /// <summary>
     /// 中国
     /// </summary>
     [Description("中国")]
     ZH = 1,
     /// <summary>
     /// 美国
     /// </summary>
     [Description("美国")]
     MG = 2
 }