winform折叠菜单

布局：

实际效果：

代码部分：

 1 private static int showPanelCount = 2; //需要展示的面板数量
 2 private List<Control> settingPanels;
 3 
 4 public DpRight()
 5 {
 6     InitializeComponent();
 7 }
 8 
 9 private void DpLeft_Load(object sender, EventArgs e)
10 {
11 
12     //侧边栏折叠按钮事件
13     settingPanels = new List<Control>();
14 
15     var cons = this.SettingPanel.Controls;
16     for (int i = cons.Count - 1, j = 0; i >= 0; i--)
17     {
18         var con = cons[i];
19 
20         if (con is Button)
21         {
22             con.MouseClick += Button_MouseClick;
23             con.Tag = $"{j}";
24 
25             j++;
26         }
27         else if (con is Panel)
28         {
29             if (j <= showPanelCount)
30                 con.Visible = true;
31             else
32                 con.Visible = false;
33 
34             settingPanels.Add(con);
35         }
36     }
37 
38 }
39 
40         private void Button_MouseClick(object sender, MouseEventArgs e)
41         {
42             Button btn = sender as Button;
43             int index = Convert.ToInt32(btn.Tag.ToString());
44 
45             //打开当前按钮对应面板，其他关闭
46             for (int i = 0; i < settingPanels.Count; i++)
47             {
48                 Panel panel = settingPanels[i] as Panel;
49                 if (i == index)
50                 {         
51                     panel.Visible = !panel.Visible;
52                 }
53                 else
54                 {
55                     panel.Visible = false;
56                 }
57             }
58 
59         }

 

posted @ 2020-03-28 10:18  Yan327  阅读(1594)  评论(0)  编辑  收藏  举报