public IEnumerable <ValidationResult> Validate(string instanceName, bool isRequired = false)
{
var result = new List <ValidationResult>();
if (DateFrom.YearMax == DateTime.Now.Year)
{
result.AddRange(DateFrom.ValidatePastDate($"{instanceName}.{nameof(DateFrom)}", true));
}
else
{
result.AddRange(DateFrom.Validate($"{instanceName}.{nameof(DateFrom)}", true));
}
if (DateTo.YearMax == DateTime.Now.Year)
{
result.AddRange(DateTo.ValidatePastDate($"{instanceName}.{nameof(DateTo)}", DateToRequired));
}
else
{
result.AddRange(DateTo.Validate($"{instanceName}.{nameof(DateTo)}", DateToRequired));
}
if ((DateToRequired || !DateTo.IsEmpty()) && (DateTo.ToDate() < DateFrom.ToDate()))
{
result.Add(new ValidationResult(string.Empty, new[] { $"{instanceName}.{nameof(DateTo)}" }));
}
return(result);
}