private void LoadClasses(Guid departmentValue)
{
ClassList cList = new ClassList();
//ddlDepartment.Visible = true;
if (ddlDepartment.SelectedValue != null)
{
cList = cList.GetClassesByDepartmentId(departmentValue);//Get Department Id By Department Name selected
ddlSelectClass.DataSource = cList.List;
ddlSelectClass.DataBind();
ddlSelectClass.Items.Add("Choose Class");
ddlSelectClass.SelectedValue = "Choose Class";
ddlSelectClass.Visible = true;
}
btnAddStudents.Visible = true;
}