TXT文件转换成DataSet数据集

         /// <summary>
        /// TXT文件转换成DataSet数据集
        /// </summary>
        /// <param name="FilePath"></param>
        /// <param name="TableName"></param>
        /// <returns></returns>
        private DataSet TextFileLoader(string FilePath, string TableName)
        {  

            DataSet ds = new DataSet();
            DataTable dt = new DataTable(TableName); 

            FileStream fs = File.Open(FilePath, FileMode.Open, FileAccess.Read);
            using (StreamReader reader = new StreamReader(fs, System.Text.Encoding.GetEncoding("UTF-8")))
            {
                //int fieldCount = 0;
                string[] headers = reader.ReadLine().Split(',');
                int fieldCount = headers.Length;
                for (int i = ; i < fieldCount; i++)
                {
                    dt.Columns.Add(new DataColumn(headers[i], typeof(string)));
                }
                // read one line
                string strRead="";
                // split the read line into string array
                string[] strReadBuffer=null;
                bool flag = true;
                while (flag)
                {
                    //read one line
                    strRead = reader.ReadLine();
                    // if not null
                    if (!string.IsNullOrEmpty(strRead))
                    {
                        // split into string array
                        strReadBuffer=strRead.Split(',');
                        // creat a new datarow object
                        DataRow dr = dt.NewRow();
                        //copy strings into this datarow
                        for (int i = ; i < fieldCount; i++)
                        {
                            dr[i] = strReadBuffer[i];
                        }
                        // add this row into data reader
                        dt.Rows.Add(dr);
                    }
                    else
                    {
                        flag = false;
                    }
                }
                ds.Tables.Add(dt);
                reader.Close();
                return ds;
            }

        }