An Editable ListBox for WPF

using System;
using System.Drawing;
using System.ComponentModel;

namespace EditableListboxApp.Infrastructure
{
    public enum WeebitType
    {
        Standard = 1,
        Custom = 2
    }

    public class WeebitData : IDataErrorInfo
    {
        enum ValidationProperties
        {
            Name,
            Description,
            Length,
            Width,
            Height
        }

        #region properties
        public string Name
        {
            set;
            get;
        }
        public string Description
        {
            set;
            get;
        }
        public string Length
        {
            set;
            get;
        }
        public string Width
        {
            set;
            get;
        }
        public string Height
        {
            set;
            get;
        }
        public Color WeebitColor
        {
            get;
            set;
        }

        public WeebitType WeebitType
        {
            set;
            get;
        }
        #endregion
        public bool IsValid()
        {
            bool returnVal = true;
            foreach (string property in Enum.GetNames(typeof(ValidationProperties)))
                if (GetValidationError(property) != null)
                {
                    returnVal = false;
                    break;
                }
            return returnVal;
        }
        #region IDataErrorInfo

        string IDataErrorInfo.Error { get { return null; } }

        string IDataErrorInfo.this[string propertyName]
        {
            get { return this.GetValidationError(propertyName); }
        }

        #endregion
        #region validations
        string GetValidationError(string propertyName)
        {
            string error = null;

            switch (propertyName)
            {
                case "Name":
                    error = this.ValidateName();
                    break;

                case "Description":
                    error = this.ValidateDescription();
                    break;
                case "Length":
                    error = this.ValidateFloat(this.Length,"Length");
                    break;
                case "Width":
                    error = this.ValidateFloat(this.Width,"Width");
                    break;
                case "Height":
                    error = this.ValidateFloat(this.Height,"Height");
                    break;
            }

            return error;
        }
        string ValidateName()
        {
            if (String.IsNullOrEmpty(this.Name))
            {
                return "Enter Name";
            }
            return null;
        }
        string ValidateDescription()
        {
            if (String.IsNullOrEmpty(this.Description))
            {
                return "Enter Description";
            }
            return null;
        }
        string ValidateFloat(string value, string item)
        {
            if (String.IsNullOrEmpty(value))
            {
                return "Enter "+item;
            }
            try
            {
                float temp = float.Parse(value);
                return null;
            }
            catch
            {
                return "Invalid entry.";
            }
        }

        #endregion
    }
}