/// <summary>
/// Get the enum description.
/// </summary>
/// <param name="enumType">the enum type</param>
/// <param name="enumValue">the enum value</param>
/// <exception>TypeCompatibilityException</exception>
private static string GetDescriptionWithoutCache(Type enumType, object enumValue)
{
Guard.EnumValueIsDefined(enumType, enumValue, "enumValue");
bool isFlagEnum = enumType.HasAttribute <FlagsAttribute>();
Type underlyType = Enum.GetUnderlyingType(enumType);
var names = Enum.GetNames(enumType);
StringBuilder currentName = new StringBuilder();
foreach (string name in names)
{
object value = Enum.Parse(enumType, name, false);
if (!isFlagEnum) //普通枚举。
{
if (value.Equals(enumValue))
{
currentName = new StringBuilder(name);
FieldInfo enumField = enumType.GetTypeInfo().GetField(name);
EnumDescriptionAttribute attribute = enumField.GetCustomAttribute <EnumDescriptionAttribute>();
if (attribute != null)
{
return(attribute.GetDescription().IfNullOrWhiteSpace(enumValue.ToString()));
}
}
}
else //位枚举。
{
if (((Enum)enumValue).HasFlag((Enum)value))
{
if (Convert.ToInt64(value) == 0 && Convert.ToInt64(enumValue) != 0)
{
continue;
}
string text = name;
FieldInfo enumField = enumType.GetTypeInfo().GetField(name);
EnumDescriptionAttribute attribute = enumField.GetCustomAttribute <EnumDescriptionAttribute>();
if (attribute != null)
{
text = attribute.GetDescription().IfNullOrWhiteSpace(value.ToString());
}
currentName.Append(String.Format("{0}{1}", text, FlagSplitCharacter));
}
}
}
if (isFlagEnum && currentName.Length > 0 && !FlagSplitCharacter.IsNullOrWhiteSpace())
{
currentName.Remove(currentName.Length - FlagSplitCharacter.Length, FlagSplitCharacter.Length);
}
return(currentName.ToString());
}
/// <summary>
/// Get the enum description.
/// </summary>
/// <param name="enumType">the enum type</param>
/// <param name="enumValue">the enum value</param>
/// <exception>TypeCompatibilityException</exception>
private static string GetDescriptionWithoutCache(Type enumType, object enumValue)
{
Guard.EnumValueIsDefined(enumType, enumValue, "enumValue");
var isFlagEnum = enumType.HasAttribute <FlagsAttribute>();
var names = Enum.GetNames(enumType);
var currentName = new StringBuilder();
foreach (var name in names)
{
var value = Enum.Parse(enumType, name, false);
if (!isFlagEnum) //普通枚举。
{
currentName = new StringBuilder(name);
var attribute = GetOrdinaryValue(value, enumValue, name, enumType);
if (attribute == null)
{
continue;
}
return(attribute.GetDescription().IfNullOrWhiteSpace(enumValue.ToString()));
}
else //位枚举。
{
var text = name;
var attribute = GetFlagValue(value, enumValue, text, enumType);
if (attribute == null)
{
continue;
}
text = attribute.GetDescription().IfNullOrWhiteSpace(value.ToString());
currentName.Append($"{text}{FlagSplitCharacter}");
}
}
if (isFlagEnum && currentName.Length > 0 && !FlagSplitCharacter.IsNullOrWhiteSpace())
{
currentName.Remove(currentName.Length - FlagSplitCharacter.Length, FlagSplitCharacter.Length);
}
return(currentName.ToString());
}