access最快速的批量导入SQL的方法 使用SqlBulkCopy

access最快速的批量导入SQL的方法 使用SqlBulkCopy

2008-11-22 23:51

string filename = DateTime.Now.ToString("yyyyMMdd") + ".mdb";         string tablename = DateTime.Now.ToString("yyyyMMdd");         if (File.Exists(Server.MapPath("/tempmdb/" + filename)))         {             //查询,如果此表存在,就表示已经添加过了, 不允许再添加             if (db.counts("select count(id) from sysobjects where name='" + tablename + "'") > 0)             {                 cm.msg("今天的数据表已经存在,您可能已经导入过了.请检查!!");                 Response.End();             }             DateTime d = DateTime.Now;             //读取源文件             db.ExeSql("select * into [" + tablename + "] from PosSrcTable");             //读数据,写SQL             OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OleDb.4.0; Data Source=" + Server.MapPath("/tempmdb/" + filename) + ";");             DataTable dts = new DataTable();             OleDbDataAdapter da = new OleDbDataAdapter("select sss_date,custom_no,txn_type from ls", conn);             da.Fill(dts);             string connstr = "server=(local);database=fasfdas;uid=sa;pwd=adfdasmin";                       SqlBulkCopy bcp = new SqlBulkCopy(connstr);             bcp.DestinationTableName = "[" + tablename + "]";             bcp.WriteToServer(dts);             //删除原来的表             File.Delete(Server.MapPath("/tempmdb/" + filename));             string totalitem = dts.Rows.Count.ToString();             dts.Clear();             dts.Dispose();             TimeSpan ts = DateTime.Now.Subtract(d);                        Response.Write("共导入" + totalitem + "条数据! 用时 " + ts.Seconds.ToString()+"秒 ");             Response.End(); 14万条数据 使用时间6秒.