private void screenBt_Click(object sender, EventArgs e)
        {
            ScreenScoreForm screenForm = new ScreenScoreForm(allCourseDT, "all", "");

            if (screenForm.ShowDialog() == DialogResult.OK)
            {
                allScoreDataGridView.DataSource = screenForm.dv;
            }
        }
        private void ScreenBt_Click(object sender, EventArgs e)
        {
            ScreenScoreForm screenForm = new ScreenScoreForm(courseInfoDT, "one", NameTB.Text);

            if (screenForm.ShowDialog() == DialogResult.OK)
            {
                CourseScoreDataGridView.DataSource = screenForm.dv;
            }
        }