private void coursetxt_SelectedIndexChanged(object sender, EventArgs e)
        {
            KeyValuePair <int, string> selectValue = (KeyValuePair <int, string>)coursetxt.SelectedItem;

            cID = selectValue.Key.ToString();
            this.courseID.Text = cID;
            crs.GetDetail(cID);
            FillFormData();
        }
        private void CourseAddForm_Load(object sender, EventArgs e)
        {
            crs = new crs();
            this.courseDuration.SelectedIndex = 0;
            this.courseType.SelectedIndex     = 0;
            Dictionary <int, string> dict = crs.CourseList();

            this.coursetxt.DataSource = new BindingSource(dict, null);
            coursetxt.DisplayMember   = "Value";
            coursetxt.ValueMember     = "Key";
            crs.GetDetail(cID);
        }