01.using System;
02.using System.Collections.Generic;
03.using System.ComponentModel;
04.using System.Data;
05.using System.Drawing;
06.using System.Linq;
07.using System.Text;
08.using System.Windows.Forms;
09.
10.namespace WindowsFormsApplication2
11.{
12. public partial class Form1 : Form
13. {
14. public Form1()
15. {
16. InitializeComponent();
17. this.IsMdiContainer = true;
18. }
19.
20. private void addToolStripMenuItem_Click(object sender, EventArgs e)
21. {
22. Form2 frm = new Form2();
23. frm.MdiParent = this;
24. frm.Show();
25. }
26.
27. private void closeToolStripMenuItem1_Click(object sender, EventArgs e)
28. {
29. this.ActiveMdiChild.Close();
30. }
31.
32. private void saveToolStripMenuItem_Click(object sender, EventArgs e)
33. {
34. ((Form2)this.ActiveMdiChild).Save();
35. }
36. }
37.}
