Hello Dennis,
>I have already solved the problem of the Deletion.
Glad you got it working
>But it have created a new problem.
There is nothing new, "All new things are well forgotten old things" < g >
>As i deleted a invoice and i add a new invoice with the same invoice no. (deleted previous), an error will be occured. (Primary key is not unique). How can i fix this problem ?
In such a case, use reusing technique
* Human is a question asked by birth and answered by death. Machine is another kind of question with another kind of answer