FormBorderStyle.None 时候最大化不遮盖任务栏 this.FormBorderStyle = FormBorderStyle.None; this.MaximumSize = new Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height); this.WindowState = FormWindowState.Maximized; 转自:http://wisecn.blog.163.com/blog/static/19755864520120644738257/