CSV文件转JSON

        /// <summary>
        /// CSVToJSON
        /// </summary>
        /// <param name="filePath">CSV文件路径</param>
        public void CsvToJson(string filePath)
        {
            JObject sta = new JObject();          //新建一个JObject对象
            sta.Add(new JProperty("starttime", "20180101"));
            JArray arr = new JArray();                  //新建一个JArray对象
            Dictionary<string, int> lstTrueField = new Dictionary<string, int>();  //新建键值对对象
            StreamReader reader = new StreamReader(filePath, System.Text.Encoding.Default, false);    //读取CSV文件
            int m = 0;
            while (!reader.EndOfStream)
            {
                m = m + 1;
                string str = reader.ReadLine();
                string[] split = str.Split(',');
                if (m == 1)                           //第一行作为列名
                {
                    for (int c = 3; c < split.Length; c++)
                    {
                        lstTrueField.Add(split[c], c);    //课程与列序号
                    }
                }
                if (m > 1)
                {
                    arr.Add(new JObject(new JProperty("Name", split[0]), new JProperty("Age", split[1]),new JProperty("Sex",split[2]),new JProperty("course", newJArray(new JObject(from p in lstTrueField select  new JProperty(p.Key,split[p.Value]))))));
                }
            }
            reader.Close();   //关闭流
            sta.Add(new JProperty("locdata", arr));  //将JArray数组加入JObject对象内。
        }