01.ublic partial class FormMain : Form
02. {
03. private FormStore formStore = new FormStore();
04.
05. public FormMain()
06. {
07. InitializeComponent();
08. }
09.
10. private void FormMain_Load(object sender, EventArgs e)
11. {
12. this.Width = 1200;
13. this.Height = 750;
14. this.Left = (int)(Screen.PrimaryScreen.Bounds.Width / 2) - (int)(this.Width / 2);
15. this.Top = 5;
16. }
17.
18. private void toolStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
19. {
20. string txt = e.ClickedItem.Text;
21. switch (txt)
22. {
23. case "รายการสินค้า":
24. {
25. ShowChildForm(formStore);
26. }
27. break;
28. }
29. }
30. private void ShowChildForm(Form f)
31. {
32. if(f.Visible == true)
33. {
34. f.BringToFront();
35. }
36. else
37. {
38. f.MdiParent = this;
39. f.Show();
40. }
41. }
42.
43. private void FormMain_MdiChildActivate(object sender, EventArgs e)
44. {
45. if (this.ActiveMdiChild == null)
46. {
47. return;
48. }
49. else
50. {
51. toolStripStatusLabel1.Text = this.ActiveMdiChild.Text;
52. }
53. }
54. }
