ComparableCheck.cs

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using System;
using System.Collections.Generic;
using System.Text;

namespace HouseOver.THARM.Search
{
    [Serializable]
    public class ComparableCheck : Check
    {
        object minValue;
        object maxValue;

        public object MaxValue
        {
            get { return maxValue; }
            set {
                try { maxValue = (IComparable)Convert.ChangeType(value, FieldType); }
                catch { maxValue = null; }
            }
        }

        public object MinValue
        {
            get { return minValue; }
            set {
                try { minValue = (IComparable)Convert.ChangeType(value, FieldType); }
                catch { minValue = null; }
            }
        }

        public ComparableCheck(string fieldName, string humanReadableName, bool fieldRequired, Type fieldType, object minValue, object maxValue)
            : base(fieldName, humanReadableName, fieldRequired, fieldType)
        {
            this.minValue = minValue;
            this.maxValue = maxValue;

        }

        public override bool Verify(object c)
        {
            if (minValue == null || maxValue == null || !fieldRequired)
                return true;
            IComparable ic;
            try
            {
                ic = (IComparable)Convert.ChangeType(c, FieldType);
            }
            catch  {
                return false;
            }
            return ic.CompareTo(minValue) >= 0 && ic.CompareTo(maxValue) <= 0;
        }
    }
}

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