public partial class MessageForm : Form

    {

         int t;

         string txt;

        /// <summary>

        /// 自定义弹窗

        /// </summary>

        /// <param name="time">窗体消失时间</param>

        /// <param name="text">窗体提示内容</param>

        public MessageForm(int time, string text)

        {

            t = time;

            txt = text;

            InitializeComponent();

        }

        private void timer1_Tick(object sender, EventArgs e)

        {

            this.Close();

        }

        private void MessageForm_Load(object sender, EventArgs e)

        {

            label1.Text = txt;

            timer1.Interval = t;

            timer1.Start();

        }

    }

    MessageForm mf = new MessageForm(, "输入参数有误");

                mf.Show();