在access中application对象有两个未公开的方法,其中一个是Save As Text, 另一个是Load From Text。我记得是刚学Access不久,当时在研究FMS一个分析工具时,跟踪发现它总会产生一些临时文件,对这些临时文件分析,发现它与VB里的窗体文件差不多的格式,所以
在access中application对象有两个未公开的方法,其中一个是Save As Text, 另一个是Load From Text。我记得是刚学Access不久,当时在研究FMS一个分析工具时,跟踪发现它总会产生一些临时文件,对这些临时文件分析,发现它与VB里的窗体文件差不多的格式,所以估计微软可以将Access的窗体转换为文本格式,并提供一种逆相转换的方法。所以发现了深厚的兴趣,后来就找到这两个方法。
虽然微软还有其它一些比较好用的未公开的属性,但我在这两个方法上花的时间还是最多的,因为它的确有使用价值,所以说说自己多年来的使用心得。
这两个方法在以后的Access版本中并不一定支持,所以我并不建议大家使用,但因为有些功能如果使用它来实现,可以节省比较多的时间,所以,在某些情况下,我还是会使用它,至少现有的ACCESS版本都支持这个方法。如果同样的功能你可以通过Access正常的方法来实现,我则建议你使用微软公开的方法。切记!
用途1:
使用application.saveastext acForm,“我的窗体”,“c:test.txt”将整个窗体导出到一个文本文件,将其打包发送给朋友,让朋友再使用application.loadfromtext acForm,“我的窗体”,“c:test.txt”再导回去。你可以压缩打包传送。
用途2:
可以将窗体保存到文本文件,然后把文本文件存储到OLE字段里,这样整个窗体的界面与代码都可保存到ACCESS数据表里,这个方法对编写 代码库管理器 非常有用。在使用时,还可即时将文本文件还原到一个窗体,让使用者即时预览到这个技巧产生的效果
用途3:
将窗体保存到一个文件文件,使用正则表达式对代码进行分析,可以分析语法,代码结构、语法错误、字数统计等等,你可参考一下FMS的一个Access分析工具,它有的功能,你花个半年,做出来应该也没有大问题啦。记得让我试用一下源码哦:)
用途4:
真正的全局替换,一般我们需要全局替换窗体里一个属性的名称或内容,,需要逐个逐个修改,而无法实现像代码中的全局替换,现在将窗体导出到文本文件,在文本文件里进行全局替换,完成后再导回窗体。
用途5:
繁简转换,中英转换,一般对控件标题、提示文字、默认值等进行文字上繁简转换后并不能真正实现繁简转换,在转换后相应的环境中打开还会出现ACTIVEX控件找不到或者OLE错误,将窗体或其它对象转换为文本文件后再进行繁简转换,然后再转换相应的字符集、字体名称、节的繁简对应名称、CRC校验码等之后,再导回Access相应对象,就可完成整个Access程序的转换,相应的程序效果可参见我做的繁简转换通用程序,记住简体一般是134繁体是136。
英文你打开就知了。我奉劝,如果你想做同样的功能,那你最好就别做了,用我的就得了,免得断我财路,我提成20%给你就得了,等两年后积到100元我再一次汇给你:)
用途6:
中英转换,虽然还需要进行少量手工转换,但已经节省了不少时间,但如何使用正式表达式来正确区别哪些是标题、提示文字、消息框还需要一些技巧。
用途7:改变控件的默认属性
除了我们在设计状态修改控件的默认属性之外,使用修改文本文件的内容也可达到修改控件默认属性的效果,当窗体或报表导出到文本文件之后,所有的窗体、控件属件以及默认控件属性都在文本文件中体现出来,通过修改这个文本文件里有关默认属性的设置即可达到目的。
什么是默认属性?举个例子,你从国外下载一个程序,为什么往窗体里面添加控件,控件字体总是Serif,而在简体中文环境下新建的窗体控件,字体都是“宋体”,在繁体中文环境下新建的窗体控件,字体都是“新细明体”,就是因为这个控件的默认属性导致的。

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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