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implementing Dynamic Control Layout in WinForms When Resizing the Form

๐Ÿ‘€ Views: 19 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-08-21
winforms dynamic-controls layout csharp

I'm trying to debug I'm working on a personal project and I tried several approaches but none seem to work... This might be a silly question, but I'm currently working with a question with dynamically added controls in my WinForms application that are not resizing correctly when the form is resized. I'm using .NET 5 and have set the `Anchor` properties for the controls, but they still seem to overlap or get misplaced when the form's size changes. For instance, I have a `FlowLayoutPanel` that contains several buttons added at runtime. Hereโ€™s the code snippet where I add controls to the panel: ```csharp private void AddButton(string buttonText) { Button newButton = new Button(); newButton.Text = buttonText; newButton.AutoSize = true; flowLayoutPanel1.Controls.Add(newButton); } ``` I also set the `Dock` property of the `FlowLayoutPanel` to `Top`, and Iโ€™ve tried adjusting the layout settings using `PerformLayout()` after adding controls. However, the buttons still donโ€™t maintain the expected layout when I resize the form. Sometimes they overlap, and sometimes they just disappear from the panel. I've searched for solutions and came across tips like using `TableLayoutPanel` instead, but I prefer to keep my current layout. Is there a way to ensure that the buttons resize or reposition correctly without losing the flexibility of the `FlowLayoutPanel`? Additionally, when I resize the form quickly, I sometimes get a `System.InvalidOperationException` saying 'The control must be a child of the form before performing this operation.' This behavior usually occurs if I add controls to the panel during a resize event, which I understand is not recommended. However, I want to ensure everything works seamlessly. Any insights or alternative approaches would be greatly appreciated! Any ideas what could be causing this? My development environment is Windows. Has anyone else encountered this? This is happening in both development and production on CentOS. I'm working in a Linux environment.