Excel大批量导入数据到SQLServer数据库-万条只用1秒

private string ExcelToStudent()
      {
          /*---*/
          var preStr = DateTime.Now.ToString("yyyyMMddHHmmssfff") + "_";//文件前缀


          var httpFile = Request.Files["fileUpload"];

          bool flag = !(httpFile.ContentType != "application/vnd.ms-excel");

          if (httpFile.ContentType != "application/octet-stream")
          {
              flag = false;
          }
          if (flag)
          {
              return "{"error":"文件格式不正确！请先下载模板再导入数据！","msg":"gzz"}";
          }
          if (httpFile != null)
          {
              var fileName = httpFile.FileName;


              const string fileUrl = "../../../UploadFile/temp/";

              var uploadPath = Server.MapPath(fileUrl) + preStr + fileName;//上传路径


              if (!Directory.Exists(Server.MapPath(fileUrl)))   //文件夹不存在
              {
                  Directory.CreateDirectory(Server.MapPath(fileUrl));
              }

              httpFile.SaveAs(uploadPath);//文件上传

              fileName = fileName.Split('.')[0];

              var table = ExcelHelper.ExcelRead("temp", "Sheet1", preStr + fileName, out uploadPath);
              if (table == null)
              {
                  return "{"error":"模版格式不正确！","msg":"gzz"}";
              }
              if (table.Rows.Count == 0)
              {
                  return "{"error":"此模版数据为空！","msg":"gzz"}";
              }
              if (table.Columns.Count != 10)
              {
                  return "{"error":"模版格式不正确！","msg":"gzz"}";
              }
              DataTable dataTable = GetTableSchema();
              long countTime = SqlBulkCopyInsert(table, dataTable);
              YFY.Web.App_Code.JLCommonBind.InsertActionLog(Session["master_name"].ToString(), "老师信息导入", "导入数据！合计" + (table.Rows.Count - count) + "条！");
              if (!string.IsNullOrEmpty(schoolName))
              {
                  return "{"error":"","msg":"" + schoolName.TrimEnd(',') + "不存在!成功导入" + (table.Rows.Count - count) + "条数据！"}";
              }

              if (!string.IsNullOrEmpty(xueyuanName))
              {
                  return "{"error":"","msg":"" + xueyuanName.TrimEnd(',') + "不存在!成功导入" + (table.Rows.Count - count) + "条数据！"}";
              }

              return "{"error":"","msg":"成功导入" + (table.Rows.Count - count) + "条数据!"}";
          }


          return "{"error":"","msg":"数据导入失败!"}";   
      }
      /// <summary>
      /// 使用SqlBulkCopy方式插入数据
      /// </summary>
      /// <param name="dt">源数据</param>
      /// <param name="dataTable">目标table</param>
      /// <returns></returns>
      private long SqlBulkCopyInsert(DataTable dt, DataTable dataTable)
      {
          Commens.Commens comm = new YFY.Commens.Commens();

          string schoolId,xueyuanId,classId,zhuanyeId = "";
          foreach (DataRow item in dt.Rows)
          {
              DataRow dataRow = dataTable.NewRow();

              dataRow["StudentName"] = item["学生姓名"].ToString().Trim();

              schoolId = WDCBS_Common.GetSchoolId(item["学校名称"].ToString().Trim(), 0);
              xueyuanId = WDCBS_Common.GetSchoolId(item["院系"].ToString().Trim(), 1);
              classId = WDCBS_Common.GetSchoolId(item["班级"].ToString().Trim(), 2);
              zhuanyeId = WDCBS_Common.GetZhuanYeId(item["专业"].ToString().Trim());

              if (schoolId != "")//根据学校名称判断学校是否存在
              {
                  dataRow["SchoolID"] = schoolId;
              }
              else
              {
                  schoolName += item["学校名称"].ToString().Trim() + ",";
                  count++;
                  continue;

              }

              if (xueyuanId != "")//根据学院名称判断学院是否存在
              {
                  dataRow["XueYuanID"] = xueyuanId;
              }
              else
              {
                  schoolName += item["院系"].ToString().Trim() + ",";
                  count++;
                  continue;

              }

              if (zhuanyeId != "")//根据学院名称判断学院是否存在
              {
                  dataRow["ZhuanYeID"] = zhuanyeId;
              }
              else
              {
                  var bll = new BLLDao.JL_UnlimitCategory();
                  var model = new ModelDao.JL_UnlimitCategory();
                  model.CodeName = item["专业"].ToString().Trim();
                  model.CodePid = 1;
                  model.CodeFlag = "0";
                  int e_id = bll.Add(model);
                  dataRow["ZhuanYeID"] = e_id;
                  bll.MenuDropList("1", "0", "JL_UnlimitCategory", "CodeCode", "CodeId", e_id);

              }

              if (classId != "")//根据学院名称判断学院是否存在
              {
                  dataRow["ClassID"] = classId;
              }
              else
              {
                  var bll = new WDCBS_SchoolMessage();
                  var model = new Model.WDCBS_SchoolMessage();
                  model.TopId =schoolId;
                  model.UpId = xueyuanId;
                  model.Type = "3";
                  model.ShowIf = "1";
                  model.PingCeIf = "1";
                  model.AddTime = DateTime.Now;
                  model.Name = item["班级"].ToString().Trim();
                  dataRow["ClassID"] = bll.Add(model);
              }


              dataRow["Sex"] = item["性别"].ToString().Trim();
              dataRow["Paymoney"] = item["支付额度"].ToString().Trim();
              if (item["是否支付"].ToString().Trim()=="是")
              {
                  dataRow["PayMoneyIf"] = "1";
              }
              else
              {
                  dataRow["PayMoneyIf"] = "0";
              }
              if (WDCBS_Common.GetStudentIsExist(item["身份证号码"].ToString().Trim()))               {
                  dataRow["IDCard"] = item["身份证号码"].ToString().Trim();
              }
              else
              {
                  count++;
                  continue;
              }
              dataRow["Password"] = comm.MD5("123");  //密码
              dataRow["BiYeIf"] =0;
              dataRow["Role"] = ConfigurationManager.AppSettings["StudengRole"].ToString();
              dataRow["LoginIf"] = "1";

              dataTable.Rows.Add(dataRow);
          }

          Stopwatch stopwatch = new Stopwatch();
          stopwatch.Start();

          string connectionString = Maticsoft.DBUtility.PubConstant.ConnectionString;
          SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(connectionString);
          sqlBulkCopy.DestinationTableName = "WDCBS_Student";

          sqlBulkCopy.BatchSize = dataTable.Rows.Count;
          SqlConnection sqlConnection = new SqlConnection(connectionString);
          sqlConnection.Open();
          if (dataTable != null && dataTable.Rows.Count != 0)
          {
              try
              {
                  sqlBulkCopy.WriteToServer(dataTable);
              }
              catch (Exception ex)
              {
                  YFY.Web.App_Code.JLCommonBind.InsertActionLog("", "学生信息导入", ex.ToString());
              }

          }
          sqlBulkCopy.Close();
          sqlConnection.Close();
          stopwatch.Stop();

          return stopwatch.ElapsedMilliseconds;

          //return dataTable.Rows.Count;
      }

      #region
      private static DataTable GetTableSchema()
      {
          DataTable dataTable = new DataTable();


         

dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("StudentID") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("StudentNo") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("StudentName") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Sex") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("SchoolID") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("XueYuanID") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("ClassID") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("ZhuanYeID") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("StudentProvince") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("StudentCity") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("StudentAdress") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("FamilyPersonName") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("FamilyPersonRelation") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("FamilyPersonTelephone") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("BaoXianIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Mail") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("IDCard") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Telephone") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("QQ") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Password") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Studenttype") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("BanZhuRenTeacher") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("SchoolZhiDaoTeacher") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("EnterpriseZhiDaoTeacher") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("BiYeSheJiTeacher") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("JiuYeZhiDaoTeacher") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("XueJie") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("BiYeIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("BiYeTime") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Statue") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("PingCeTeacherIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("PingCeEnterpriseIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("TeacherPingCeIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("EnterprisePingCeIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("JiaoWuPingCeIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Attachment") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Remark") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Role") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("Paymoney") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("PayMoneyIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("HavePaymoney") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("RegistTag") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("RegistTagIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("LoginIf") });
dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("DeleteIf") });


          return dataTable;
      }
      #endregion
      /// <summary>