/Eksponent.Dewd/Fields/Criteria/IsNullOrEmpty.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Xml.Linq;

using Eksponent.Dewd.Extensions;



namespace Eksponent.Dewd.Fields.Criteria

{

    public class IsNullOrEmpty : IsNull

    {

        public IsNullOrEmpty(XElement element) : base(element) { }



        public override bool IsTrue(object value)

        {

            if (base.IsTrue(value))

                return true; // is null



            string strValue = String.Format("{0}", value);

            if (CriterionElement.GetAttribute<bool>("trim"))

                strValue = strValue.Trim();



            return (strValue.Length == 0);

        }

    }

}