C# Enum 枚举的操作。 键名称，值 和描述 和 遍历枚举
/// <summary>
/// 促销
/// </summary>
public enum cxsd
{
[Description("推荐")]
tj = 2,
[Description("置顶")]
zd = 4,
[Description("热卖")]
rm = 8
}
//获取 枚举 值
Array rolearry = Enum.GetValues(typeof(cxsd));
//获取枚举名称
String[]rolearry = Enum.GetNames(typeof(cxsd));
获取枚举描述
descriptions(cxsd.rm);//调用
public static string description(Enum en)
{
Type type = en.GetType();
MemberInfo[] memInfo = type.GetMember(en.ToString());
if (memInfo != null && memInfo.Length > 0)
{
object[] attrs = memInfo[0].GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), false);
if (attrs != null && attrs.Length > 0)
return ((DescriptionAttribute)attrs[0]).Description;
}
return en.ToString();
}
//遍历枚举
Type type = typeof(cxsd);
foreach (FieldInfo x in type.GetFields(BindingFlags.Public | BindingFlags.Static))
{
cxsd item = (cxsd)x.GetValue(null);
}
//通过以上方法 扩展一个 通用方法 。来获取 指定值的 描述信息
//调用方法
List<int> vlist=new List<int>();
vlist.add(4);
vlist.add(8);
descriptions<cxsd>(vlist);
/// <summary>
/// 获取描述信息
/// </summary>
/// <param name="envalue">枚举值的集合</param>
/// <returns>枚举值对应的描述集合</returns>
public static List<String> descriptions<T>(List<int> envalue)
{
Type type = typeof(T);
List<String> deslist = new List<String>();
foreach (FieldInfo x in type.GetFields(BindingFlags.Public | BindingFlags.Static))
{
T item = (T)x.GetValue(null);
if (envalue.Find((int e) => { return e == Convert.ToInt32(item); }) > 0)
{
deslist.Add(description<T>(item));
}
}
return deslist;
}
public static string description<T>(T en)
{
Type type = en.GetType();
MemberInfo[] memInfo = type.GetMember(en.ToString());
if (memInfo != null && memInfo.Length > 0)
{
object[] attrs = memInfo[0].GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), false);
if (attrs != null && attrs.Length > 0)
return ((DescriptionAttribute)attrs[0]).Description;
}
return en.ToString();
}