DataTable導出爲cvs

       /// <summary>
        /// 導出文件爲csv
        /// </summary>
        /// <param name="table">數據表</param>
        /// <param name="file">導出路徑</param>
        public void dataTableToCsv(DataTable table, string file)
        {
            string title = "";
            FileStream fs = new FileStream(file, FileMode.Create);
            StreamWriter sw = new StreamWriter(new BufferedStream(fs), Encoding.Default);
            for (int i = 0; i < table.Columns.Count; i++)
            {
                title += table.Columns[i].ColumnName + ",";
            }
            title = title.Substring(0, title.Length - 1) + "\n";
            sw.Write(title);
            foreach (DataRow row in table.Rows)
            {
                string line = "";
                for (int i = 0; i < table.Columns.Count; i++)
                {
                    line += row[i].ToString() + ",";
                }
                line = line.Substring(0, line.Length - 1) + "\n";
                sw.Write(line);
            }
            sw.Close();
            fs.Close();
        }