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I really want to help here. It's just that I still don't understand exactly how the user interaction is supposed to go, so I can't suggest any coding techniques.

It sounds like a pretty standard thing you are trying to do here, and the usual solution goes like this:
Initially A shows "Apple/Oracle/MS..."; B and C are blank
User selects MS, B is populated with list of MS products; C is still blank.
User selects "Office" from B, C is populated with "Word/Excel/..."
... uses selects from C, selection process is complete OR
... user selects another product from B, C is re-populated appropriately OR
... user selects another manufacturer, B is re-populated appropriately; C is cleared

Instead of clearing/populating entries you can instead have them all present but disable/enable them.

But none of your descriptions seem to match this standard model - how exactly does your desired solution differ from that?

Votes + Comments
Glad you've grabbed this one.
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user in row1 -> select microsoft (column a) , column b populated in row1 only not in all rows............ This is my problem. java populate combo box b for all rows ... i want it to remain row specific... Make a small program and u will see what happen...

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I'm really sorry. Maybe this is just a language thing. I honestly do not understand what you are saying.
In your example col B should allow the user to pick office or sqlserver or windows; right? How is that possible if you only populate row 1?

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Check this

Yes, of course. So what? Why would you enable the OK button when the user selection is incomplete? How does this relate to the previous questions?

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i just made it simple , if this question solve other solve too....

In the above pic i selected column b but where is column a for that row........ I think u get it.... I want user to select column a then b and then c .... he cant run from that row where he select column a until he select column c.

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We're going round in circles here, just like you did with Norm. I can't help you if you don't respond to my questions or say anything I can understand. Sorry. Good luck anyway.
J

Votes + Comments
good
thanx
0

Seems like very difficult question......... i m closing this thread... thanx for helping.

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