使用SqlBulkCopy批量插入数据，既然你已经得到了Object有8000条数据，所以他就可以转换成集合。以下是示例，希望对您有帮助。

以上没有使用事务，使用事务在性能上会有一定的影响，如果要使用事务，可以设置SqlBulkCopyOptions.UseInternalTransaction。

public void Insert(DataTable dataTable, int batchSize = 10000)
        {
            Checker.ArgumentNull(dataTable, "dataTable");
            if (dataTable.Rows.Count == 0)
            {
                return;
            }
            using (var connection = (SqlConnection)ServiceContext.Database.CreateConnection())
            {
                try
                {
                    connection.TryOpen();
                    //给表名加上前后导符
                    var tableName = DbUtility.FormatByQuote(ServiceContext.Database.Provider.GetService<ISyntaxProvider>(), dataTable.TableName);
                    using (var bulk = new SqlBulkCopy(connection, SqlBulkCopyOptions.KeepIdentity, null)
                        {
                            DestinationTableName = tableName,
                            BatchSize = batchSize
                        })
                    {
                        //循环所有列，为bulk添加映射
                        dataTable.EachColumn(c => bulk.ColumnMappings.Add(c.ColumnName, c.ColumnName), c => !c.AutoIncrement);
                        bulk.WriteToServer(dataTable);
                        bulk.Close();
                    }
                }
                catch (Exception exp)
                {
                    throw new BatcherException(exp);
                }
                finally
                {
                    connection.TryClose();
                }
            }
        }