/// <summary>
/// 获得枚举的{EDescription,Value}字典集
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="predicate"></param>
/// <returns></returns>
public static Dictionary <string, T> GetEDescription2ValueDictionary <T>(Func <T, bool> predicate = null)
{
var enumType = typeof(T);
if (!enumType.IsEnum)
{
throw new ArgumentException("传入的泛型参数必须是枚举类型！", nameof(enumType));
}
var dic = new Dictionary <string, T>();
var enumValues = Enum.GetValues(enumType).Cast <T>();
if (predicate != null)
{
enumValues = enumValues.Where(predicate);
}
foreach (T enumValue in enumValues)
{
var name = Enum.GetName(enumType, enumValue);
FieldInfo field = enumType.GetFieldInfo(name);
EDescriptionAttribute attribute = field.GetCustomAttribute(typeof(EDescriptionAttribute)) as EDescriptionAttribute;
var key = attribute == null ? name : attribute.EDescription;
dic.Add(key, enumValue);
}
return(dic);
}
/// <summary>
/// 扩展方法，获得枚举的{Value,Description,EDescription}字典集
/// 获取enum值对应多个的Description（需根据需求调整EnumItem）
/// </summary>
/// <param name="enumType">枚举本身</param>
/// <param name="IgnoreValues">忽略值集合，默认为空</param>
/// <returns>枚举的Description</returns>
public static List <EnumItem> GetDescriptionToList(Type enumType, int[] IgnoreValues = null)
{
if (!enumType.IsEnum)
{
throw new ArgumentException("传入的参数必须是枚举类型！", nameof(enumType));
}
var list = new List <EnumItem>();
var enumValues = Enum.GetValues(enumType);
foreach (Enum enumValue in enumValues)
{
//对应的int值
var valueNum = enumValue.GetHashCode();
var name = Enum.GetName(enumType, enumValue);
FieldInfo field = enumType.GetFieldInfo(name);
//中文描述
DescriptionAttribute attributeN = field.GetCustomAttribute(typeof(DescriptionAttribute)) as DescriptionAttribute;
//英文描述
EDescriptionAttribute attributeE = field.GetCustomAttribute(typeof(EDescriptionAttribute)) as EDescriptionAttribute;
//中描述文本
var valueN = attributeN == null ? string.Empty : attributeN.Description;
//英中描述文本
var valueE = attributeE == null ? string.Empty : attributeE.EDescription;
if (IgnoreValues != null && IgnoreValues.Any())
{
if (IgnoreValues.Contains(valueNum))
{
continue;
}
}
list.Add(new EnumItem(valueNum, valueN, valueE));
}
return(list);
}
