public ActionResult XoaDangKy(int MaHoatDong)
{
//kiem tra sestion Phieu dang ky hoat dong ton tai hay chua
if (Session["PhieuDangKyHoatDong"] == null)
{
return(RedirectToAction("DangKyChuongTrinh"));
}
//kiem tra hoat dong co ton tai trong csdl hay khong
HoatDong hd = db.HoatDongs.SingleOrDefault(n => n.MaHoatDong == MaHoatDong);
if (hd == null)
{
Response.StatusCode = 404;
return(null);
}
//lay list hoat dong tu sestion
List <PhieuDangKyHoatDong> listPhieuDangKyHoatDong = LayPhieuDangKyHoatDong();
//kiem tra hoat dong co nam trong phieu dang ky hay khong
PhieuDangKyHoatDong hdCheck = listPhieuDangKyHoatDong.SingleOrDefault(n => n.MaHoatDong == MaHoatDong);
if (hdCheck == null)
{
return(RedirectToAction("DangKyChuongTrinh"));
}
//xoa hoat dong da dang ky
listPhieuDangKyHoatDong.Remove(hdCheck);
return(RedirectToAction("XemChuongTrinh"));
}
//them phieu dang ky (load lai trang)
public ActionResult ThemPhieuDangKy(int MaHoatDong, string strURL)
{
// kiem tra hoat dong co trong csdl hay khong
HoatDong hd = db.HoatDongs.SingleOrDefault(n => n.MaHoatDong == MaHoatDong);
if (hd == null)
{
//trang duong dan khong hop le
Response.StatusCode = 404;
return(null);
}
//tao list phieu dang ky
List <PhieuDangKyHoatDong> listPhieuDangKyHoatDong = LayPhieuDangKyHoatDong();
//neu hoat dong da ton tai trong phieu dang ky
PhieuDangKyHoatDong hdCheck = listPhieuDangKyHoatDong.SingleOrDefault(n => n.MaHoatDong == MaHoatDong);
if (hdCheck != null)
{
hdCheck.NgayDangKy = DateTime.Now;
return(Redirect(strURL));
}
PhieuDangKyHoatDong ItemPhieuDangKy = new PhieuDangKyHoatDong(MaHoatDong);
listPhieuDangKyHoatDong.Add(ItemPhieuDangKy);
return(Redirect(strURL));
}