public static List <TEnum> GetValid <TEnum>(DateTime date, Expression <Func <ExternalCodeAttribute, bool> > expression = null) where TEnum : Enum
{
Func <ExternalCodeAttribute, bool> expcompiled = null;
if (expression != null)
{
expcompiled = expression.Compile();
}
List <TEnum> result = new();
foreach (var value in Enum.GetValues(typeof(TEnum)))
{
var attr = ExternalCodeAttributeExtensions.GetExternalCodeAttribute(value);
if (
(string.IsNullOrWhiteSpace(attr.ValidFromDate) &&
(
string.IsNullOrWhiteSpace(attr.ValidToDate) ||
date <= DateTime.Parse(attr.ValidToDate)
)
)
||
(date >= DateTime.Parse(attr.ValidFromDate) &&
(
string.IsNullOrWhiteSpace(attr.ValidToDate) ||
date <= DateTime.Parse(attr.ValidToDate)
)
)
)
{
if (expcompiled is null || expcompiled.Invoke(attr))
{
result.Add((TEnum)value);
}
}
}
return(result);
}
public static string GetCode(this Enum enumerate)
{
return(ExternalCodeAttributeExtensions.GetExternalCodeAttribute(enumerate)?.Code);
}