Automatically expand WinForms panel vertically to bottom of container

Question

I am trying to establish the following behavior: When hiding the bottom (blue) panel I want the top (red) panel to stretch to replace it vertically and vice versa (hiding red panel should expand blue).

Using a table layout panel with auto sized rows I was able to get the blue to stretch upwards but I can not get the red panel to grow downwards.

It's difficult to see from the far right picture but the bottom table row did not shrink with the panel. Table layout panel is not a requirement for me but I was hoping it would offer a solution.

Answer 1

Try using a SplitContainer control instead.

You can control each panel's visibility with the Collapsed properties:

splitContainer1.Panel1Collapsed = true;

or

splitContainer1.Panel2Collapsed = true;