public partial class MainForm : Form

    {

        public MainForm()

        {

            InitializeComponent();

        }

 private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)

        {

            switch (e.Node.Name)

            {

                case "Node1":

                    Form1 F1 = new Form1();

                    F1.TopLevel = false;

                    F1.FormBorderStyle = FormBorderStyle.None;

                    F1.WindowState = FormWindowState.Maximized;

                    panel显示.Controls.Add(F1);

                    F1.Show();

                    break;



                case "Node2":

                    Form2 F2 = new Form2();

                    F2.TopLevel = false;

                    F2.FormBorderStyle = FormBorderStyle.None;

                    F2.WindowState = FormWindowState.Maximized;

                    panel显示.Controls.Add(F2);