VB参数查询，查询数据库中符合指定数据列的内容，本例中查询城市列中的符合用户输入的城市内容，这里是测试数据库的路径，如果你的VB不是装在D盘，请修改盘符为指定盘符：D:\Program Files\Microsoft Visual Studio\VB98\NWIND.MDB，指定参数的VB查询实例。-VB parameter query, query the database that match the contents of the specified data column, in this case the city column in the query entered by the user of the city comply with the content, here is the test database path, if your VB is not installed in the D drive, change the drive letter to assign a drive letter: D: \ Program Files \ Microsoft Visual Studio \ VB98 \ NWIND.MDB, specify the parameters of the VB query instance.