public void Refresh()
{
txtCourseCode.Text = "";
txtCourseName.Text = "";
txtCredit.Text = "";
txtDescription.Text = "";
DepartmentDropDownList.ClearSelection();
SemestersDropDownList.ClearSelection();
}
public void GetSemesters()
{
SemestersDropDownList.DataSource = _CourseManager.GetSemesters();
SemestersDropDownList.DataTextField = "SemesterName";
SemestersDropDownList.DataValueField = "Id";
SemestersDropDownList.DataBind();
SemestersDropDownList.Items.Insert(0, new ListItem("Select Semesters", "0"));
Courses _Course = new Courses();
_Course.SemesterId = Convert.ToInt32(SemestersDropDownList.SelectedValue);
}