VB6源码禁止录入重复数据，实现在输入数据的时候，加上一个判断，禁止将重复数据保存到数据库，也就是判断数据库是否存在相同的记录，相当实用的VB数据库操作技巧吧！Module1.bas中主要是定义函数返回数据库连接，另外定义设置Toolbar控件上按钮状态的函数。操作的数据库对象为db_sell.mdb的客户类别表，如果发现提交的数据内容已存在，会弹出一个提示框告之-VB6 source of duplicate data entry ban, implemented in the input data, plus a judge to prohibit duplicate data will be saved to the database, the same database records to determine whether there is a considerable practical skills VB database operations it! Module1.bas is mainly defined function returns a database connection, in addition to the definition of the function buttons on the Toolbar control state settings. Database object manipulation for db_sell.mdb customer category table, if you find the content of submitted data already exists, it will pop up a message box advertised