CODEWITHSUNDEEP
c#winforms
yasmuru
yasmuru

Reputation: 1186

Dynamic flowlayoutpanel creation and dispose in c#

I have created flowlayoutpanel dynamically in windows form using c# . An i have added one button in that panel . Can anyone tell me how to remove that panel dynamically after the button as pressed? Here is the coding :

  FlowLayoutPanel[] flws ;
       Button[] butns ;

        for ( int i=0; i<3; i++)
          {    
            flws[i] = new FlowLayoutPanel();
            flws[i].Name = "flw" + i;
            flws[i].Location = new Point(3,brh);
            flws[i].Size = new Size(317,122);
            flws[i].BackColor = Color.DarkCyan;
            flws[i].BorderStyle = BorderStyle.Fixed3D;
            butns[i] = new Button();
            butns[i].Click += new EventHandler(butns_Click);
            butns[i].Text = "submit";
            butns[i].Name = "but" + i;
            butns[i].Location = new Point(1100, 186 + brh);

            flws[i].Controls.Add(butns[i]);
           }

Upvotes: 1

Views: 2437

Answers (3)

joe
joe

Reputation: 8654

I expect that you keep FlowLayoutPanel[] flws in a form.
In the same way you added flws to the Form by this.Controls.add(flws), remove it in the same way: this.Controls.Remove(flws).
Remove it when the button is clicked, add the Clicked event to your form:

pubic class Form1: Form {
    FlowLayoutPanel[] flws;

    // ...

    private void button_Click(object sender, EventArgs e) {
        this.Controls.Remove(flws);
    }
}

Upvotes: 0

user2259020
user2259020

Reputation:

Came up with this really quick, hope it helps.

[Edited it to meet your requeriments].

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;

namespace FlowLayoutStackoverflow
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //Load three FLP's
            for (int i = 0; i < 3; i++)
            {
                var _flowLayoutPanel = new FlowLayoutPanel();
                _flowLayoutPanel.Name = "Flow" + i;
                _flowLayoutPanel.Location = new Point(30*i, 30*i);
                _flowLayoutPanel.Size = new Size(300, 30);
                _flowLayoutPanel.BackColor = Color.DarkCyan;
                _flowLayoutPanel.BorderStyle = BorderStyle.Fixed3D;
                _flowLayoutPanel.Disposed += _flowLayoutPanel_Disposed;

                //Dispose Button
                var _button = new Button();
                _button.Text = "Dispose";
                _button.Name = "DisposeButton" + i;
                _button.Location = new Point(1*i, 1*i);
                _button.MouseClick += _button_MouseClick;

                _flowLayoutPanel.Controls.Add(_button);
                this.Controls.Add(_flowLayoutPanel);
            }
        }

        private void _button_MouseClick(object sender, MouseEventArgs e)
        {
            (sender as Button).Parent.Dispose();
        }

        //Notify disposal
        private void _flowLayoutPanel_Disposed(object sender, EventArgs e)
        {
            MessageBox.Show(string.Format("Disposed FlowLayoutPanel with name {0}", (sender as FlowLayoutPanel).Name));
        }
    }
}

Upvotes: 1

Jonathon Reinhart
Jonathon Reinhart

Reputation: 137547

Note that FlowLayoutPanel derives from Control which is IDisposable. This means you should call Dispose on the panel when you remove it:

private void RemovePanel(FlowLayoutPanel panel) {
    this.Controls.Remove(panel);
    panel.Dispose();
}

You don't need to worry about the Buttons you've added to the panel, because

When you call Dispose on the form, it will call Dispose for each control in its Controls collection.

Upvotes: 1

Related Questions