ExcelFormulaParser.Engine.ExcelUtilities.AddressTranslator.GetIntPart C# (CSharp) Method

        private int? GetIntPart(string address)
        {
            if (Regex.IsMatch(address, "[0-9]+"))
            {
                return int.Parse(Regex.Match(address, "[0-9]+").Value);
            }
            return null;
        }