C# Tray Program Example Double-click to display the form and minimize it to the tray

Click on the taskbar to show-hide switch, right-click menu, capture the close form event

public partial class frmMain : Form
   {
       public frmMain()
       {
           InitializeComponent();
       }


       #region 注销


       public void Logout()
       {
           if (MessageBox.Show("确认要退出吗？", "提示", MessageBoxButtons.OKCancel) == DialogResult.OK)
           {
               notifyIcon1.Visible = false;
               FormCollection fc = Application.OpenForms;
               if (fc != null && fc.Count > 0)
               {
                   foreach (Form window in fc)
                   {
                       window.Hide();
                   }
               }
               CacheHelper.CurrentUsrName = "";
               CacheHelper.CurrentRoleId = 0;
               frmLogin fl = new frmLogin();
               fl.Show();
           }


       }


       private void 注销登陆ToolStripMenuItem_Click(object sender, EventArgs e)
       {
           Logout();
       }


       #endregion


       #region 修改密码


       private void 修改密码ToolStripMenuItem_Click(object sender, EventArgs e)
       {
           frmChangePwd fcp = new frmChangePwd();
           fcp.Show();
       }


       #endregion


       private void frmMain_Load(object sender, EventArgs e)
       {


       }


       private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
       {
           if (MessageBox.Show("确认要退出吗？", "提示", MessageBoxButtons.OKCancel) == DialogResult.OK)
           {
               Logout();
           }
           else
           {
               e.Cancel = true;
           }
       }


       private void 最大化ToolStripMenuItem_Click(object sender, EventArgs e)
       {
           ShowWin();
       }


       private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
       {
           Logout();
       }


       private void frmMain_SizeChanged(object sender, EventArgs e)
       {
           if (this.WindowState == FormWindowState.Minimized)
           {
               HideWin();
           }
       }


       private void notifyIcon1_MouseClick(object sender, MouseEventArgs e)
       {
           if (e.Button == MouseButtons.Right)
           {
               contextMenuStrip1.Show(MousePosition.X, MousePosition.Y);
           }
           else
           {
               ShowWin();
           }
       }


       #region 隐藏显示窗体


       /// <summary>
       /// 隐藏窗体
       /// </summary>
       private void HideWin()
       {
           this.notifyIcon1.Visible = true;
           this.Hide();
       }


       /// <summary>
       /// 显示主窗体
       /// </summary>
       private void ShowWin()
       {
           if (Visible)
           {
               HideWin();
           }
           else
           {
               /////这里注意顺序很重要，先show 后设置state
               Show();
               WindowState = FormWindowState.Normal;
           }
       }


       #endregion
   }

The above is the C# tray program example. Double-click to display the form, minimize to the tray. For more related content, please Follow the PHP Chinese website (www.php.cn)!