OracleBulkCopy的批量数据导入

        private void button1_Click(object sender, EventArgs e)
         {
             OpenFileDialog afd = new OpenFileDialog();
             if (afd.ShowDialog()!=System.Windows.Forms.DialogResult.OK)
             {
                 return;
             }
             string fileName = afd.FileName;
             if (Path.GetExtension(fileName)!=".csv")
             {
                 MessageBox.Show("文件名后缀必须是.csv");
                 return;
             }
             DataTable table = new DataTable();
             using(Stream stream=new FileStream(fileName,FileMode.Open,FileAccess.Read))
             using(StreamReader sr=new StreamReader(stream,Encoding.Default))
             {
                 string firstline = sr.ReadLine();
                 string line;

                 #region 把创建的列加入表的列集合中
                 //Id
                 DataColumn column = new DataColumn();
                 column.ColumnName = "Id";
                 column.DataType = System.Type.GetType("System.Int32");
                 table.Columns.Add(column);
                 //MobileNumber
                 column = new DataColumn();
                 column.ColumnName = "MobileNumber";
                 column.DataType = System.Type.GetType("System.String");
                 column.MaxLength = ;
                 table.Columns.Add(column);
                 //MobileArea
                 column = new DataColumn();
                 column.ColumnName = "MobileArea";
                 column.DataType = System.Type.GetType("System.String");
                 column.MaxLength = ;
                 table.Columns.Add(column);
                 //MobileType
                 column = new DataColumn();
                 column.ColumnName = "MobileType";
                 column.DataType = System.Type.GetType("System.String");
                 column.MaxLength = ;
                 table.Columns.Add(column);
                 //AreaCode
                 column = new DataColumn();
                 column.ColumnName = "AreaCode";
                 column.DataType = System.Type.GetType("System.String");
                 column.MaxLength = ;
                 table.Columns.Add(column);
                 //PostCode
                 column = new DataColumn();
                 column.ColumnName = "PostCode";
                 column.DataType = System.Type.GetType("System.String");
                 column.MaxLength = ;
                 table.Columns.Add(column);
                 #endregion

                 while ((line = sr.ReadLine())!=null)
                 {
                     string[] mobileMsg = line.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
                     int Id = Convert.ToInt32(mobileMsg[]);
                     string MobileNumber = mobileMsg[].Trim('"');
                     string MobileArea = mobileMsg[].Trim('"');
                     string MobileType = mobileMsg[].Trim('"');
                     string AreaCode = mobileMsg[].Trim('"');
                     string PostCode = mobileMsg[].Trim('"');
                     //创建行，把行加入表的行集合中
                     DataRow row = table.NewRow();
                     row["Id"] = Id;
                     row["MobileNumber"] = MobileNumber;
                     row["MobileArea"] = MobileArea;
                     row["MobileType"] = MobileType;
                     row["AreaCode"] = AreaCode;
                     row["PostCode"] = PostCode;
                     table.Rows.Add(row);
                 }
             }

             int i = table.Rows.Count;
             Stopwatch sw = new Stopwatch();
             sw.Start();
             using (OracleBulkCopy bulkCopy = new OracleBulkCopy(OracleHelper.CreateConnection()))
                 {
                     bulkCopy.DestinationTableName = "T_MOBILE";
                     foreach (DataColumn column in table.Columns)
                     {
                         bulkCopy.ColumnMappings.Add(column.ColumnName, column.ColumnName);//源列名->目标列名
                     }
                     try //如果发生异常就回滚
                     {
                         bulkCopy.WriteToServer(table);//把table表写入数据库表中
                        // tx.Commit();
                     }
                     catch (Exception ex)
                     {
                       //  tx.Rollback();
                         throw new Exception(ex.Message);
                     }
                 }
                 sw.Stop();
                 MessageBox.Show("耗时：" + sw.ElapsedMilliseconds + "秒");
            // }
         }