public void XoaKH_Doan(int makh, int madoan)
{
ChiTietDoan ctdoan = db.ChiTietDoans.Where(x => x.MaKH == makh && x.MaDoan == madoan).First();
db.ChiTietDoans.Remove(ctdoan);
db.SaveChanges();
}
public void CapNhatMaDoan(int maKH, int maDoan)
{
ChiTietDoan ctdoan = new ChiTietDoan();
ctdoan.MaKH = maKH;
ctdoan.MaDoan = maDoan;
db.ChiTietDoans.Add(ctdoan);
db.SaveChanges();
}
