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Vertical and horizontal scroll bars appear when only horizontal

I have a situation where when squeezing Form

horizontally, horizontal and vertical appear ScrollBar

. I created a new WinForms project to duplicate the behavior, here is the setup I used.

  • Add TabControl

    to Form

    , install Dock

    toFill

  • Add TableLayoutPanel

    toTabPage

  • Set Dock

    to Fill

    , use one row and one column, set AutoScroll

    to "true
  • Set the size of the row and column AutoSize

  • Add Label

    in TableLayoutPanel

    , set its text to something long
  • Run the app, shrink Form

    horizontally
  • Note that both horizontal and vertical are displayed ScrollBar

It's not a major issue, but it's a little broken and rather annoying to see after a while. I feel that something is not changing there. I'm guessing there is a horizontal ScrollBar

one that starts up TableLayoutPanel

ScrollBars

instead of shrinking TableLayoutPanel

to fit the new vertical space.

I tried this using the tab AutoScroll

set to true

and got the same result.

Any understanding would be greatly appreciated.

EDIT:

I tested the same setup using only Panel

, Dock

mounted on Fill

, AutoSize

and set the value GrowAndShrink

, AutoScroll

on. The same steps start horizontal but NOT vertical ScrollBar

.

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1 answer


Your guess is correct. As long as there is not enough room on the client area to display all of the controls, a scroll bar will appear, vertical or horizontal, or even both.

To avoid this, use SystemInformation

to get information about scrollbars and add additional additions to your controls. For example, to hide the horizontal bar, simply do the following:



var vertScrollWidth = SystemInformation.VerticalScrollBarWidth;

tableLayoutPanel.Padding = new Padding(0, 0, vertScrollWidth, 0);
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