[C#] MDI Sample

WindowsFormsApplication3.zip

using System;
using System.Windows.Forms;

namespace MdiSample
{
    public partial class FormMain : Form
    {
        public FormMain()
        {
            InitializeComponent();
        }

        private void menuItemNew_Click(object sender, EventArgs e)
        {
            FormChild newMDIChild = new FormChild();
            newMDIChild.MdiParent = this; // Set the Parent Form
            newMDIChild.Show(); // Display the new form
        }

        private void menuItemCascade_Click(object sender, EventArgs e)
        {
            this.LayoutMdi(MdiLayout.Cascade);
        }

        private void menuItemTileHorizontal_Click(object sender, EventArgs e)
        {
            this.LayoutMdi(MdiLayout.TileHorizontal);
        }

        private void menuItemTileVertical_Click(object sender, EventArgs e)
        {
            this.LayoutMdi(MdiLayout.TileVertical);
        }
    }
}