filehelpers field converter

CustomFormatConverter.cs

    public sealed class CustomFormatConverter<T> : ConverterBase where T : IFormattable
    {
        private string _formatString;
        private IFormatProvider _formatProvider;
        private Type _objType;

        #region constructors
        public CustomFormatConverter(string Format)
            : this(Format, null)
        { }
        public CustomFormatConverter(string Format, IFormatProvider Provider)
        {
            _formatString = Format;
            _formatProvider = Provider;
            _objType = typeof(T);
        }
        #endregion
        public override string FieldToString(object from)
        {
            if (from == null)
                return String.Empty;

            return ((IFormattable)from).ToString(_formatString, _formatProvider);
        }

        public override object StringToField(string from)
        {
            object rtnVal;

            TypeConverter converter = TypeDescriptor.GetConverter(_objType);
            if (converter == null)
                throw new ConvertException(from, _objType, "Unable to get converter for type " + _objType.ToString());
            try
            {
                rtnVal = converter.ConvertFromString(from);
            }
            catch (Exception E)
            {
                throw new ConvertException(from, _objType, E.Message);
            }

            return rtnVal;
        }
    }