How to add all windows form in the same panel in vb.net?

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hi all visitors
i have problem with sub form in vb.net. it is different Access that have sub form.
i have 3 forms( 1 is main form,2 is item form,3 item list)
This is my process:
1. item form is inside panel1 of main form
2. form 3(item list) can open when i click buttom on form 2( Item)
3. when display item list also inside panel1 of main form too

how can i make item list inside panel1 of main form?

Best Regards,
TONY

Posted 15-Aug-11 18:37pm

soeun tony

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Sergey Alexandrovich Kryukov · Answer 1 · 2011-08-15T19:03:00

You cannot put one form insider another. There is no functional parent-child relationship between forms.

Formally, a Form is Control, so Control.Parent could be used for Forms, but an attempt to make one form a parent of another one throws an exception. You can do a dirty work-around by using P/Invoked unmanaged Windows API SetParent, but… don't do it. The preventions of putting a form into a form is a good fool-proof measure, don't abuse this .NET UI library.

Instead, make just one form. What were different forms re-work into panels, use Control.Parents.Add. A very good alternative is using TabControl; in this case what were your form will be the TabPages. It's easy to implement and looks and function in a very nice ways.

Good luck,

—SA