using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace UIStandardWebApi.EntityDto.ValidateRules { public class RequiredAttribute : BaseAbstractAttribute { public RequiredAttribute(string? messge) : base(messge) { } public override (bool, string?) DoValidate(object oValue) { return oValue == null ? (false, Message) : (true, string.Empty); } } }