private void but_input_Click(object sender, EventArgs e)//输入包的长宽高
        {
            HCSCM_set_size hcsm = new HCSCM_set_size(Length, Weidth, Hight, Stu);

            hcsm.ShowDialog();
            Length       = hcsm.Length;
            Weidth       = hcsm.Weidth;
            Hight        = hcsm.Hight;
            Stu          = hcsm.Stu;
            tb_size.Text = Length + "x" + Weidth + "x" + Hight;
            tb_stu.Text  = Stu + "  STU";
        }
        private void but_input_Click(object sender, EventArgs e)
        {
            HCSCM_set_size hcsm = new HCSCM_set_size(Length, Weidth, Hight, Stu);

            //获取一个值,指是否在Windows任务栏中显示窗体。
            hcsm.ShowInTaskbar = false;
            hcsm.ShowDialog();
            Length       = hcsm.Length;
            Weidth       = hcsm.Weidth;
            Hight        = hcsm.Hight;
            Stu          = hcsm.Stu;
            tb_size.Text = Length + "x" + Weidth + "x" + Hight;
            tb_stu.Text  = Stu;
        }