C# 中dataTable中的数据批量增加至数据表中

   /// <summary>
         /// 批量添加
         /// </summary>
         /// <param name="dt"></param>
         public static bool AddExchangeBulkCopy(DataTable dt, string table_name)
         {
             bool ret = false;

             using (SqlConnection Connection = new SqlConnection(CONN_STRING_NON_DTC))
             {

                 Connection.Open();

                 SqlTransaction sqlbulkTransaction = Connection.BeginTransaction();

                 using (SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(Connection, SqlBulkCopyOptions.CheckConstraints, sqlbulkTransaction))
                 {

                     //源列字段：A，目标数据源字段：B
                     //@o_id,ticket,@order_id,@product_id,@amount

                     sqlBulkCopy.ColumnMappings.Add(, "return_orderid");

                     sqlBulkCopy.ColumnMappings.Add(, "phone");

                     sqlBulkCopy.ColumnMappings.Add(, "real_amount");

                     sqlBulkCopy.ColumnMappings.Add(, "finish_date");

                     sqlBulkCopy.ColumnMappings.Add(, "supplier");

                     sqlBulkCopy.ColumnMappings.Add(, "is_sign");

                     sqlBulkCopy.ColumnMappings.Add(, "msg_error");

                     sqlBulkCopy.BatchSize = dt.Rows.Count;

                     sqlBulkCopy.BulkCopyTimeout = ;

                     sqlBulkCopy.DestinationTableName = table_name;

                     if (dt != null && dt.Rows.Count != )
                     {
                         try
                         {
                             sqlBulkCopy.WriteToServer(dt);

                             sqlbulkTransaction.Commit();
                             ret = true;
                         }
                         catch (Exception ex)
                         {
                             try
                             {
                                 sqlbulkTransaction.Rollback();
                                 ret = false;
                             }
                             catch
                             {
                                 ret = false;
                             }
                             throw ex;
                         }
                         finally
                         {
                         }
                     }
                 }
             }
             return ret;
         }