/// <summary>
/// Returns the value for the field passed across or null if the field could not be found.
/// </summary>
/// <param name="fieldName"></param>
/// <param name="isHex">True if the cell contains a hex value rather than decimal.</param>
/// <returns></returns>
public byte GetByte(string fieldName, bool isHex = false)
{
var valueColumn = FindValueColumn(fieldName);
return(isHex ? Convert.ToByte(Worksheet.String(valueColumn), 16) : Worksheet.Byte(valueColumn));
}
