Home/ Questions/Q 7170589
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-28T15:14:36+00:00

Very weird situation going on with a FlowLayoutPanel… I have been dynamically adding user

  • 0

Very weird situation going on with a FlowLayoutPanel…

I have been dynamically adding user controls to my panel. This user control has a height of 105. If I have my FlowLayoutPanelwidth to only show 1 “column” of controls, it will only display 296 of them. The rest of the controls are grayed out at the bottom of the flowlayoutpanel. If I widen the flp to allow 2 “columns” of controls, I can see 592 of them, with the remainder grayed out at the bottom. I have gone in and resized the user control to make it shorter in height, which works in some respects (i.e. it works when I have two columns, but not just 1), and can go forward with this work-around.

So, I guess my question is, why does the FlowLayoutPanel behave in this fashion? It seems (based on what I saw) that there is a limit to how much data the FLP will show at one time.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Your comment just reminded me that when you’re adding many controls to any container it is a good idea to do this: 

    YourPanel.SuspendLayout();

// populate panel with controls

YourPanel.ResumeLayout(false);

    This in effect stops the container (panel) from re-rendering itself every time you add a control until you’re done adding controls. In the very least your panel creation will be smoother and faster. Not sure if this might fix your issue or avoid the need for a hack with PerformLayout.

    If you look at your Form’s designer file you will actually see this in action in the InitializeComponent function.

    • 0