juipnet/Infrastructure/Hncore.Infrastructure/CSV/CsvRow.cs

using System.Text;

namespace Hncore.Infrastructure.CSV
{
    public class CsvRow
    {
        private string _content = "";

        public CsvRow AddCell(string content)
        {
            if (_content != "")
            {
                _content += ",";
            }

            _content += StringToCsvCell(content);

            return this;
        }

        public override string ToString()
        {
            return _content;
        }

        private static string StringToCsvCell(string str)
        {
            bool mustQuote = str.Contains(",") || str.Contains("\"") || str.Contains("\r") || str.Contains("\n");
            if (mustQuote)
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("\"");
                foreach (char nextChar in str)
                {
                    sb.Append(nextChar);
                    if (nextChar == '"')
                    {
                        sb.Append("\"");
                    }
                }

                sb.Append("\"");
                return sb.ToString();
            }

            return str;
        }
    }
}