1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Threading.Tasks;
9 using System.Windows.Forms;
10
11 namespace WinApp01_Eason
12 {
13 public partial class Form1 : Form
14 {
15 public Form1()
16 {
17 InitializeComponent();
18 }
19 //
20 // 窗口最大化
21 private void btnMaxWindow_Click(object sender, EventArgs e)
22 {
23 this.WindowState = FormWindowState.Maximized;
24 }
25 //
26 // 窗口恢复
27 private void btnNormalWindow_Click(object sender, EventArgs e)
28 {
29 this.WindowState = FormWindowState.Normal;
30 }
31 //
32 // 窗口最小化
33 private void btnMinWindow_Click(object sender, EventArgs e)
34 {
35 this.WindowState = FormWindowState.Minimized;
36 }
37 //
38 // 创建frmHello窗口
39 private void btnShowHello_Click(object sender, EventArgs e)
40 {
41 frmHello fmhello = new frmHello();
42 fmhello.Show();
43 }
44 //
45 // 退出程序
46 private void btnAppExit_Click(object sender, EventArgs e)
47 {
48 Application.Exit();
49 }
50 //
51 // 显示隐藏的窗体
52 private void btnCloseHideWindow_Click(object sender, EventArgs e)
53 {
54 /***********************************************************************
55 * 方法1 :
56 // 遍历打开的窗体并转换成数组赋值给forms
57 Form[] forms = Application.OpenForms.Cast<Form>().ToArray();
58 foreach (Form frm in forms)
59 {
60 // 如果当前窗口可视为假,说明当前窗口是隐藏的
61 if (false == frm.Visible)
62 {
63 // 那么就显示窗口
64 frm.Visible = true;
65 }
66 }
67
68 ***********************************************************************/
69
70 //方法2
71 foreach ( Form hideform in Application.OpenForms)
72 {
73 if (null != hideform && false == hideform.Visible)
74 {
75 hideform.Visible = true;
76 }
77 }
78
79 }
80 }
81 }
