Bring lines one from to another form

I have FormA having Button for FormB. I need to create lines on FormA from FormB. If i select
Multiple Lines on FormB and click for submit(button on FormB) then it should create all those
lines on FormA one by one. And after that those lines should be deleted from FormB .
Note : both forms having different DataSource.

For reference, this question is already being discussed on another forum.