splitcontainer auto resizeing

[Walter Sobchak]

I have a split container and on panel 1 I have a groupbox.
When I change group box visibility I want the splitcontainer to auto
resize so that the panel2 is ether covering the whole space (groupbox
invisible) or to resize to fill the space when the groupbox is visible.
I tried to do it with panel1.AutoSizeMode = GrowAndShrink and
panel1.AutoSize = true in the designer.

Any other ideas how this could be done?
Thanks in advance.

 

[Walter Sobchak]

Collapse panel property does the trick.
But my groupbox location gets changed. The ancor is set to all sides.
Docking in set to none because otherwise the borders aren't visible.

 

[Mark Peters]

Docking in set to none because otherwise the borders aren't visible.

You can set the Padding property on the panel to make those borders
visible.

 

[Walter Sobchak]

You can set the Padding property on the panel to make those borders
visible.

I tried but it didn't help.
The situation is like this:

splitcontainer1.Panel2
panel1
panel2
panel3
groupbox

The panels are always within the groupbox borders which are all under
splitcontainer panel. The anchor of them are set to all sides.
When I resize the form it all works ok.
The problem is when I collapse the splitcontainer1.Panel2. After
collapsing back the groupbox borders are not visible (I guess the panels
are spread) and the position is a little bit changed.
I tried setting the padding of panels to values of 2, 5, and 10 but it
didn't help.
What am I doing wrong?