问题描述
尊敬的先生，
我正在使用VB.NET开发Windows应用程序，其中我使用MSAccess 2007作为数据库.
在设计了整个数据库之后，我已经在我的应用程序中成功使用了它.但是后来对现有表进行了一些更改..
当我在特定表中添加另外一列..并运行应用程序时，它第一次成功运行，但是当我再次运行时，错误就出现了该列不存在..当我打开设计表但不存在时.
那么我每次运行都会一次又一次地添加同一列.
有什么问题.为什么会这样?
请帮助我.....
谢谢..
Respected Sir,
I am developing windows application with VB.NET,in which i m using MSAccess 2007 as database..
After designed whole database,i have used it in my application successfully..
but later on some changes came into existing table..
when i add one more column in particular table..and run application then its works first time successfully but when i run again then error comes that column not present..when i open design table but column was not present.
then i have again add same column again and again for every run.
What is the problem..why this is happening?
Please help me.....
Thank you..
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