private void MDIparent_Load(object sender, EventArgs e)
        {
            MDIchild mdiChild = new MDIchild();

            mdiChild.MdiParent = this;

            mdiChild.Show();
        }
        private void MDIparent_Load(object sender, EventArgs e)
        {
            MDIchild mdiChild = new MDIchild();

            mdiChild.MdiParent = this;

            mdiChild.Show();
        }