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从数据库检索更新的数据

[英]Retrieve updated data from Database

I have an application without sources, using MySql DataBase 3.23, C# .net-4.0. 我有一个没有源的应用程序,使用MySql DataBase 3.23,C#.net-4.0。

I can't update to the new version, and, I must retrieve the new data on update table. 我无法更新到新版本,并且必须在更新表上检索新数据。 The trigger can't be used for this version. 触发器不能用于此版本。 Of course I have user and password for log in. You help me please on how can I extract the new records? 当然,我有用于登录的用户名和密码。请您帮助我如何提取新记录? thanks in advance. 提前致谢。

Edit: 编辑:

CREATE TABLE PREPARATI ( 
    TIPO CHAR(1), 
    UNITA CHAR(30), 
    PARAMETRO CHAR(30) ,
    CODICE CHAR(30), 
    PRODOTTO CHAR(30), 
    LOTTO CHAR(30) ,
    FASE CHAR(30), 
    STATO smallint, 
    BEGIN_T int, 
    END_T int, 
    TOT_T int, 
    INCR_T int, 
    N_SAMPLES int, 
    TOT_Q float, 
    INCR_Q float, 
    GLOB_Q float, 
    MIN_Q float, 
    MAX_Q float, 
    CAUSA smallint, 
    FMT_COD CHAR(1),
    TIPO_COD smallint,
    CODES CHAR(254), 
    INDEX Xtime (BEGIN_T, END_T)
);

Instead of timestamps, there is a column that stores the time in milliseconds upon update. 代替时间戳,有一列存储更新时的时间(以毫秒为单位)。 I need to retrieve the newly added record. 我需要检索新添加的记录。

if i completely understand what you mean you want to write codes to retrieve information from a MySQL database so you are familiar with database programming and SQL commands i assume you are familiar to connect to a SQL server database as a C# programmer knows it . 如果我完全理解您的意思,您想要编写代码从MySQL数据库中检索信息,从而熟悉数据库编程和SQL命令,我认为您熟悉C#程序员所知的连接SQL Server数据库的方法。 you can add appropriate reference for MySQL database and create an adapter and commands you need to retrieve data from database . 您可以为MySQL数据库添加适当的参考,并创建从数据库检索数据所需的适配器和命令。

the dll you need is MySql.Data.dll and the namespace to use is MySql.Data you can download it here : MySQL.Data.dll download page 您需要的dll是MySql.Data.dll,要使用的命名空间是MySql.Data,您可以在这里下载MySQL.Data.dll下载页面

and if you need further clarifications and be familiar with its classes and methods i recommend to check this out : MySQL commands 并且如果您需要进一步的说明并熟悉其类和方法,我建议您检查一下: MySQL命令

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