CSV导入SQLSERVER数据库

    /// <summary>
    /// 通过文件流的方式来读取CSV文件
    /// </summary>
    /// <param name="files">文件名称</param>
    /// <param name="HeadYes">第一行是否为列标题</param>
    /// <param name="span">分隔符</param>
    /// <returns></returns>
    public DataTable ReadCsvFileToTable(bool HeadYes, char span)
    {
        //文件路径和文件名
        string files = path + fileName;
        DataTable dt = new DataTable();
        StreamReader fileReader = new StreamReader(files, Encoding.Default);
        try
        {
            //是否为第一行（如果HeadYes为TRUE，则第一行为标题行）
            int lsi = 0;
            //列之间的分隔符
            char cv = span;
            while (fileReader.EndOfStream == false)
            {
                string line = fileReader.ReadLine();
                string[] y = line.Split(cv);
                //第一行为标题行
                if (HeadYes == true)
                {
                    //第一行
                    if (lsi == 0)
                    {
                        for (int i = 0; i < y.Length; i++)
                        {
                            dt.Columns.Add(y[i].Trim().ToString());
                        }
                        lsi++;
                    }
                    //从第二列开始为数据列
                    else
                    {
                        DataRow dr = dt.NewRow();
                        for (int i = 0; i < y.Length; i++)
                        {
                            dr[i] = y[i].Trim();
                        }
                        dt.Rows.Add(dr);
                    }
                }
                //第一行不为标题行
                else
                {
                    if (lsi == 0)
                    {
                        for (int i = 0; i < y.Length; i++)
                        {
                            dt.Columns.Add("Col" + i.ToString());
                        }
                        lsi++;
                    }
                    DataRow dr = dt.NewRow();
                    for (int i = 0; i < y.Length; i++)
                    {
                        dr[i] = y[i].Trim();
                    }
                    dt.Rows.Add(dr);
                }
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            fileReader.Close();
            fileReader.Dispose();
        }
        return dt;
    }

    private string conn = ConfigurationManager.ConnectionStrings["ConStr"].ToString();    /// <summary>    /// 将指定表的数据Copy至目标数据库
    /// </summary>
    /// <param name="dt">数据表</param>
    /// <param name="outTime">超时时间</param>
    /// <returns></returns>
    public string CopyTableToSql(DataTable dt, int outTime, string tableName)
    {
        SqlBulkCopy sbc = new SqlBulkCopy(conn, SqlBulkCopyOptions.UseInternalTransaction);
        sbc.BulkCopyTimeout = outTime;
        sbc.NotifyAfter = dt.Rows.Count;
        try
        {
            sbc.DestinationTableName = tableName;
            sbc.WriteToServer(dt);
            return "";
        }
        catch (Exception ex)
        {
            return ex.Message;
        }
        finally
        {
            sbc.Close();
        }
    }

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