vb.net - .NET Why does "Anchor" not take Toolstrip into account?

Question

I have created a form and added a ToolStrip to it.

Then I added a big button and anchored it to all sides.

Then I created a second button that would set the ToolStrip visible and invisible:

 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    Me.ToolStrip1.Visible = Not Me.ToolStrip1.Visible

End Sub

However, when I make the ToolStrip invisible, the big button does not change its size and position.

Does anybody know why?

Thank you!

Answer 1

You can make things work as you expect by using a Panel to host the controls, rather than the Form.

From the perspective of an empty form:

1. Add the ToolStrip
2. Add a Panel
3. Set the Panel.DockStyle to Fill
4. Add all the rest of your controls to the Panel

Now the panel will automatically resize based on the visible status of the ToolStrip.