EnumHelper.cs
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using System.ComponentModel;
namespace HHECS.DAQShared.Common.Utils
{
/// <summary>
/// 枚举帮助类
/// </summary>
public static class EnumHelper
{
/// <summary>
/// 获取属性描述
/// </summary>
/// <param name="temp"></param>
/// <returns></returns>
public static string GetDescription<T>(string temp)
{
string Description = "";
Dictionary<string, object> dicEnum = EnumListDic<T>();
foreach (var val in dicEnum.Where(t => t.Value.ToString() == temp).ToArray())
{
return val.Value.ToString() == temp ? (Description += val.Key) : (Description += temp);
}
return Description;
}
#region 枚举转字典
/// <summary>
/// 枚举转字典集合
/// </summary>
/// <returns>返回生成的字典集合</returns>
public static Dictionary<string, object> EnumListDic<T>()
{
Dictionary<string, object> dicEnum = new Dictionary<string, object>();
Type enumType = typeof(T);
if (!enumType.IsEnum)
{
return dicEnum;
}
string[] fieldstrs = Enum.GetNames(enumType); //获取枚举字段数组
foreach (var item in fieldstrs)
{
string description = string.Empty;
var field = enumType.GetField(item);
object[] arr = field.GetCustomAttributes(typeof(DescriptionAttribute), true); //获取属性字段数组
if (arr != null && arr.Length > 0)
{
description = ((DescriptionAttribute)arr[0]).Description; //属性描述
}
else
{
description = item; //描述不存在取字段名称
}
dicEnum.Add(description, (int)Enum.Parse(enumType, item)); //不用枚举的value值作为字典key值的原因从枚举例子能看出来，其实这边应该判断他的值不存在，默认取字段名称
}
return dicEnum;
}
/// <summary>
/// 枚举转字典集合
/// </summary>
/// <returns>返回生成的字典集合</returns>
public static Dictionary<string, object> EnumListDicString<T>()
{
Dictionary<string, object> dicEnum = new Dictionary<string, object>();
Type enumType = typeof(T);
if (!enumType.IsEnum)
{
return dicEnum;
}
string[] fieldstrs = Enum.GetNames(enumType); //获取枚举字段数组
foreach (var item in fieldstrs)
{
string description = string.Empty;
var field = enumType.GetField(item);
object[] arr = field.GetCustomAttributes(typeof(DescriptionAttribute), true); //获取属性字段数组
if (arr != null && arr.Length > 0)
{
description = ((DescriptionAttribute)arr[0]).Description; //属性描述
}
else
{
description = item; //描述不存在取字段名称
}
dicEnum.Add(description, Enum.Parse(enumType, item).ToString()); //不用枚举的value值作为字典key值的原因从枚举例子能看出来，其实这边应该判断他的值不存在，默认取字段名称
}
return dicEnum;
}
/// <summary>
/// 枚举转字典集合
/// </summary>
/// <typeparam name="T">枚举类名称</typeparam>
/// <param name="keyDefault">默认key值</param>
/// <param name="valueDefault">默认value值</param>
/// <returns>返回生成的字典集合</returns>
public static Dictionary<string, object> EnumListDic<T>(string keyDefault, string valueDefault = "")
{
Dictionary<string, object> dicEnum = new Dictionary<string, object>();
Type enumType = typeof(T);
if (!enumType.IsEnum)
{
return dicEnum;
}
if (!string.IsNullOrEmpty(keyDefault)) //判断是否添加默认选项
{
dicEnum.Add(keyDefault, valueDefault);
}
string[] fieldstrs = Enum.GetNames(enumType); //获取枚举字段数组
foreach (var item in fieldstrs)
{
string description = string.Empty;
var field = enumType.GetField(item);
object[] arr = field.GetCustomAttributes(typeof(DescriptionAttribute), true); //获取属性字段数组
if (arr != null && arr.Length > 0)
{
description = ((DescriptionAttribute)arr[0]).Description; //属性描述
}
else
{
description = item; //描述不存在取字段名称
}
dicEnum.Add(description, (int)Enum.Parse(enumType, item)); //不用枚举的value值作为字典key值的原因从枚举例子能看出来，其实这边应该判断他的值不存在，默认取字段名称
}
return dicEnum;
}
/// <summary>
/// 枚举转字典集合
/// </summary>
/// <returns>返回生成的字典集合</returns>
public static Dictionary<string, object> EnumListDicString<T>(string keyDefault, string valueDefault = "")
{
Dictionary<string, object> dicEnum = new Dictionary<string, object>();
Type enumType = typeof(T);
if (!enumType.IsEnum)
{
return dicEnum;
}
if (!string.IsNullOrEmpty(keyDefault)) //判断是否添加默认选项
{
dicEnum.Add(keyDefault, valueDefault);
}
string[] fieldstrs = Enum.GetNames(enumType); //获取枚举字段数组
foreach (var item in fieldstrs)
{
string description = string.Empty;
var field = enumType.GetField(item);
object[] arr = field.GetCustomAttributes(typeof(DescriptionAttribute), true); //获取属性字段数组
if (arr != null && arr.Length > 0)
{
description = ((DescriptionAttribute)arr[0]).Description; //属性描述
}
else
{
description = item; //描述不存在取字段名称
}
dicEnum.Add(description, Enum.Parse(enumType, item).ToString()); //不用枚举的value值作为字典key值的原因从枚举例子能看出来，其实这边应该判断他的值不存在，默认取字段名称
}
return dicEnum;
}
#endregion
#region 枚举转list
/// <summary>
/// 将枚举转为List INT的集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public static List<int> EnumListInt<T>()
{
List<int> list = new List<int>();
foreach (var e in Enum.GetNames(typeof(T)))
{
int v = (int)Enum.Parse(typeof(T), e.ToString());
list.Add(v);
}
return list;
}
/// <summary>
/// 将枚举转为List string的集合
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public static List<string> EnumListString<T>()
{
List<string> list = new List<string>();
foreach (var e in Enum.GetValues(typeof(T)))
{
string v = ((int)Enum.Parse(typeof(T), e.ToString())).ToString();
list.Add(v);
}
return list;
}
#endregion
#region Enum
/// <summary>
/// 获取枚举成员的值(this是扩展方法的标志)
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static int GetIndexInt(this Enum obj)
{
return Convert.ToInt32(obj);
}
/// <summary>
/// 获取枚举成员的值(this是扩展方法的标志)
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static string GetIndexString(this Enum obj)
{
return Convert.ToInt32(obj).ToString();
}
public static T ToEnum<T>(this string obj) where T : struct
{
if (string.IsNullOrEmpty(obj))
{
return default(T);
}
try
{
return (T)Enum.Parse(typeof(T), obj, true);
}
catch (Exception)
{
return default(T);
}
}
/// <summary>
/// 获取指定枚举成员的描述
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static string ToDescriptionOrString(this Enum obj)
{
var attribs = (DescriptionAttribute[])obj.GetType().GetField(obj.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), false);
return attribs.Length > 0 ? attribs[0].Description : obj.ToString();
}
/// <summary>
/// 根据枚举值，获取指定枚举类的成员描述
/// </summary>
/// <param name="type"></param>
/// <param name="id"></param>
/// <returns></returns>
public static string GetDescriptionString(this Type type, int? id)
{
var values = from Enum e in Enum.GetValues(type)
select new { id = e.GetIndexInt(), name = e.ToDescriptionOrString() };
if (!id.HasValue) id = 0;
try
{
return values.ToList().Find(c => c.id == id).name;
}
catch
{
return "";
}
}
#endregion
}
}