protected void Page_Load(object sender, EventArgs e)
{
using (Entities db = new Entities())
{
ReservationManager resMan = new ReservationManager(db);
List<ReservationInfo> reservations = resMan.GetReservations();
if (reservations.Count == 0)
{
Button1.Visible = false;
}
GridView1.DataSource = reservations;
GridView1.DataBind();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
using (Entities db = new Entities())
{
ReservationManager resMan = new ReservationManager(db);
//Retrieving list of reservations back from GridView DataSource
List<ReservationInfo> reservations = (List<ReservationInfo>)GridView1.DataSource;
//Selected index in GridView matches an index in retrieved ListView,so you can get specific info about reservation as following.
int bookId = reservations[GridView1.SelectedIndex].BookId;
string userId = reservations[GridView1.SelectedIndex].userId;
resMan.LendBook(bookId, userId);
reservations = resMan.GetReservations();
if (reservations.Count == 0)
{
Button1.Visible = false;
}
GridView1.DataSource = reservations;
GridView1.DataBind();
}
}
