Convert a csv file to a json obect! Neat!

CsvToJson

  public static string CsvToJson(string value, char delim, bool hasHeader)
        {
            // Get lines.
            if (value == null) return null;
            value = value.Replace("\r\n", "\r");
            value = value.Replace("\r", "\r\n");
            value = value.Replace(delim, ',');
            string[] lines = value.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
            if (lines.Length < 2) throw new InvalidDataException("Must have header line.");

            // Get headers.
            List<string> headers = new List<string>();
           
            int startIdx = 0;
            if (hasHeader)
            {
                headers.AddRange(lines.First().Split(','));
                startIdx = 1;
            }
            else
            {
            //fix any empty headers
                for (int i = 0; i < headers.Count; i++)
                {
                    if (string.IsNullOrEmpty(headers[i]))
                    {
                        headers[i] = "Field" + i;
                    }
                }
            }
            // Build JSON array.
            StringBuilder sb = new StringBuilder();
            sb.AppendLine("[");
            for (int i = startIdx; i < lines.Length; i++)
            {
                //string[] fields = lines[i].Split(',');
                List<string> fields = new List<string>();
                var regex = new Regex("(?<=^|,)(\"(?:[^\"]|\"\")*\"|[^,]*)");

                foreach (Match m in regex.Matches(lines[i]))
                {
                    fields.Add(m.Value.Replace("\"", ""));
                }

                int x = headers.Count;
                if (fields.Count != headers.Count)
                {
                    while (headers.Count < fields.Count)
                    {
                        headers.Add("Field" + x++);
                    }
                    //throw new InvalidDataException("Field count must match header count.");
                }
                var jsonElements = headers.Zip(fields, (header, field) => string.Format("\"{0}\": \"{1}\"", header, field)).ToArray();
                string jsonObject = "{" + string.Format("{0}", string.Join(",", jsonElements)) + "}";
                if (i < lines.Length - 1)
                    jsonObject += ",";
                sb.AppendLine(jsonObject);
            }
            sb.AppendLine("]");
            return sb.ToString();
        }