public bool DeleteLoaiKH(string maLoaiKH)
{
try
{
LoaiKH lkh = context.LoaiKHs.Single(s => s.MaLoaiKH.Equals(maLoaiKH));
context.LoaiKHs.Remove(lkh);
context.SaveChanges();
return(true);
}
catch { return(false); }
}
public bool UpdateLoaiKH(string maLoaiKH, string tenLoaiKH, int chietKhau)
{
try
{
LoaiKH lkh = context.LoaiKHs.Single(s => s.MaLoaiKH.Equals(maLoaiKH));
lkh.TenLoaiKH = tenLoaiKH;
lkh.ChietKhau = chietKhau;
context.SaveChanges();
return(true);
}
catch { return(false); }
}
public bool InsertLoaiKH(string maLoaiKH, string tenLoaiKH, int chietKhau)
{
try
{
LoaiKH lkh = new LoaiKH
{
MaLoaiKH = maLoaiKH,
TenLoaiKH = tenLoaiKH,
ChietKhau = chietKhau
};
context.LoaiKHs.Add(lkh);
context.SaveChanges();
return(true);
}
catch { return(false); }
}