延时关闭弹窗，替代MesssageBox

1，新建一个窗体MessageForm,在里面加一个label控件和timer

2,代码如下：

   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();
        }
    }

3，在其他窗体调用：

    MessageForm mf = new MessageForm(3000, "输入参数有误");
                mf.Show();