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 = 0; 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 = 0; 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;
           }
  
       }