Flow Layout Panel

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Windows Form Application

How do I create two labels in the flowLayoutPanel?

I want them to be the first and last control in flowLayoutPanel so that any controls added won't affect their positions.

Thanks for your help.

Posted 21-Dec-10 0:17am

tuolesi

Updated 21-Dec-10 0:38am

Slacker007

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Sergey Alexandrovich Kryukov 22-Dec-10 0:46am

You already have one answer, buy I don't think you got any effective help. Why?

Are you sure this is an appropriate question? First, you claim your decision to use flow layout, and then ask how you can controls with labels. Of course you can, but where those labels will "flow" is solely your responsibility. And probably you tried and still unhappy. But what if you decision was wrong in first place (I'm pretty much sure it is: controls with labels and floating format are from very different styles).

This is not the way to get help. You better ought to start with description how your control layout should look and behave (on resize, essentially) and only after that mentioned what were your implementation ideas. This way, we would be able to figure out how to help you.

tuolesi 22-Dec-10 10:25am

I already have 2 answer,and i don't think that they got no effective help.Why?

Are you sure this is an appropriate comment?First,my question title is flow layout panel,and then ask how to set some of its child control to be able stay at first and the last index position no matter how many new controls added to the flowlayoutpanel.(i'm pretty much sure that:when i said labels in flowlayoutpanel,one should understand it is a child control and any others control are just from very similar styles)

This is not the way to help.You better ought to skip this question and start to help others people.This way,you would be able to figure out how to help people.

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Fredrik Bornander · Accepted Answer · 2010-12-21T00:52:00

You can't, FlowLayoutPanel doesn't work that way.

What you could do is write a custom AddMethod that takes the last item and removes it and readds it, something like this:

C#

private static void AddStuff(FlowLayoutPanel panel, Control control)
{
    Control last = panel.Controls[panel.Controls.Count - 1];
    panel.Controls.Remove(last);
    panel.Controls.Add(control);
    panel.Controls.Add(last);
}

Or something like it.

Hope this helps,
Fredrik Bornander

johannesnestler · Accepted Answer · 2010-12-21T01:34:00

Try this (SetChildIndex does the trick)

using System;
using System.Windows.Forms;
namespace FlowLayoutPanelTest
{
    static class Program
    {
        static void Main()
        {
            Application.Run(new TestForm());
        }
        class TestForm : Form
        {
            public TestForm()
            {
                FlowLayoutPanel flowlayoutpanel = new FlowLayoutPanel();
                flowlayoutpanel.Dock = DockStyle.Fill;
               
                Button buttonAddControl = new Button();
                buttonAddControl.Text = "Add Control";
                buttonAddControl.Dock = DockStyle.Bottom;
                buttonAddControl.Click += delegate(object obj, EventArgs ea)
                {
                    AddControlToFlowLayoutPanel(flowlayoutpanel, new Button()); // add any control
                };
                Label labelFirst = new Label();
                labelFirst.Text = "First";
                Label labelLast = new Label();
                labelLast.Text = "Last";
                flowlayoutpanel.Controls.Add(labelFirst);
                flowlayoutpanel.Controls.Add(labelLast);
                Controls.Add(flowlayoutpanel);
                Controls.Add(buttonAddControl);
            }
            void AddControlToFlowLayoutPanel(FlowLayoutPanel flowlayoutpanel, Control ctrl)
            {
                flowlayoutpanel.Controls.Add(ctrl);
                // SetChildIndex does the trick
                if (flowlayoutpanel.Controls.Count > 2)
                    flowlayoutpanel.Controls.SetChildIndex(ctrl, flowlayoutpanel.Controls.Count - 2);
            }
        }
    }
}

Flow Layout Panel

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