AddressMatch.AddrSet.getFileNameToDump C# (CSharp) Method

        private string getFileNameToDump()
        {
            string filename = "AddrSetFile-" + DateTime.Now.ToString("yyyy-MM-dd") + "-" +
                                        DateTime.Now.Hour.ToString();
            int i = 0;
            while (File.Exists(DumpDirectory + filename))
            {
                filename += i.ToString();
                i++;
            }

            filename += ".dat";
            return filename;
        }