protected void DeptDDL_SelectedIndexChanged(object sender, EventArgs e)
{
using (WebhostEntities db = new WebhostEntities())
{
List <int> courses = db.RequestableCourses.Where(rc => rc.TermId.Equals(TermId) && rc.Course.DepartmentID == SelectedDepartmentId).Select(rc => rc.id).ToList();
ClassDDL.DataSource = RequestableCourseListItem.GetDataSource(courses);
ClassDDL.DataTextField = "Text";
ClassDDL.DataValueField = "ID";
ClassDDL.DataBind();
}
}
/// <summary>
/// Get a Datasource List for use in Web Controls.
///
/// DataTextField = "Text"
/// DataValueField = "Id"
///
/// Invalid IDs are dropped without notification.
///
/// </summary>
/// <param name="actids">List of RequestableCourse.id</param>
/// <returns></returns>
public static List <RequestableCourseListItem> GetDataSource(List <int> actids)
{
List <RequestableCourseListItem> items = new List <RequestableCourseListItem>();
foreach (int id in actids)
{
RequestableCourseListItem item = new RequestableCourseListItem(id);
if (item.ID != -1)
{
items.Add(item);
}
}
return(items);
}
