private void Form1_Resize(object sender, System.EventArgs e) { if (this.WindowState == FormWindowState.Minimized) { this.Visible = false; this.notifyIcon1.Visible = true; } } private void notifyIcon1_Click(object sender, System.EventArgs e) { this.Visible = true; this.WindowState = FormWindowState.Normal; this.notifyIcon1.Visible = false; }