Dear All, I'd like to make the Panel Gaps constant width on resizing the form. Could anyone suggest a way to do it?

Hi @BenTam , Welcome to Microsoft Q&A. Please use the control's [Margin]( https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.control.margin?view=windowsdesktop-6.0#system-windows-forms-control- margin) property. Best Regards, Jiale If the answer is the right solution, please click " Accept Answer " and kindly upvote it. If you have extra questions about this answer, please click " Comment ". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

If you are working on WinForms, you might put a TableLayoutPanel on the form, and define carefully columns (3 columns with equal length, while a 4th with fixed length), and then drop other controls into the columns so that they can fill up the columns and auto-size to fit in. WPF/UWP/WinUI gives you extra flexibility on managing control arrangement with layout tools.

How to make the panel gaps constant width

Accepted answer

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2022-11-03T02:43:32.133+00:00

Hi @BenTam , Welcome to Microsoft Q&A.

Please use the control's [Margin](https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.control.margin?view=windowsdesktop-6.0#system-windows-forms-control- margin) property.

Best Regards,
Jiale

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BenTam 1,621 Reputation points

2022-11-03T03:08:30.24+00:00

Hi @Jiale Xue - MSFT

I check the Margin property of the leftmost box. It is 3,3,3,3. I would like to know how to change them to make the extra space goes into only the boxes.

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2022-11-03T03:34:28.823+00:00

What do you mean to make the extra space goes into only the boxes? Can you represent this with a diagram or pseudocode?

BenTam 1,621 Reputation points

2022-11-03T04:32:45.303+00:00

Hi @Jiale Xue - MSFT

I mean when the form enlarges, the boxes are enlarged and the panel gap widths keep constant. When the form contracts, the boxes contract, and the panel gap widths keep constant.

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2022-11-03T06:05:02.87+00:00

Put them in the tablelayoutpanel, then set the anchor to (Top, Bottom, Left, Right), the margin is the width you need. Their spacing does not change as you drag. Pay attention to the autosize and anchor properties of each control. You also need to set the properties of the tablelayoutpanel.

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2022-11-04T02:23:17.877+00:00

Give the fourth column a fixed width and put your from->to controls in there, since they don't need to be scaled. If you want the other three columns to be the same length, I suggest you use a percent of 33. Otherwise use autosize.

BenTam 1,621 Reputation points

2022-11-04T04:43:21.433+00:00

Hi @Jiale Xue - MSFT (@Anonymous )

Thanks for your reply. However, the following questions haven't been answered.

What is the difference between "AutoSize" and "percent"?

Is there any difference between putting the TableLayoutPenel first and then putting the internal controls and the internal control first and then the TableLayoutPanel?

Why not the settings in the screen capture?

New questions

I tried to set the column sizes to 100%. However, in the next open, they turn to 33%.

Can I adjust the column sizes with the mouse?

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2022-11-04T05:28:28.263+00:00

It's not as smart as WPF, with WPF you can adjust it manually.

The size of Autositze varies according to its content.
The percent size changes according to the remaining controls.

The second problem has no effect, and will eventually be put into the tablelayoutpanel.

The third question refers to the first question.

You have multiple panels, of course you could not set size to 100%

BenTam 1,621 Reputation points

2022-11-04T14:17:32.193+00:00

Hi @Jiale Xue - MSFT

Thanks for your reply!

Jiale Xue - MSFT 43,046 Reputation points Microsoft Vendor

2022-11-07T01:30:46.207+00:00

Hi @BenTam , Is there any update in this issue?
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How to make the panel gaps constant width

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