public new List <Class_LoaiMon> Select()
{
string sql = "SELECT * FROM LoaiMon";
List <Class_LoaiMon> list = new List <Class_LoaiMon>();
SqlConnection con = new SqlConnection();
con.ConnectionString = @"Data Source=DESKTOP-MFCIF4Q\SQLEXPRESS;Initial Catalog=QLNhaHang;Integrated Security=True";
con.Open();
SqlCommand cmd = new SqlCommand(sql, con);
using (DbDataReader reader = cmd.ExecuteReader())
{
if (reader.HasRows)
{
while (reader.Read())
{
string MaLoai = reader.GetString(0);
string TenLoai = reader.GetString(1);
Class_LoaiMon Test = new Class_LoaiMon(MaLoai, TenLoai);
list.Add(Test);
}
}
}
con.Close();
return(list);
}
public void delete(Class_LoaiMon loai_mon)
{
string sql = "DELETE FROM LoaiMon WHERE MaLoaiMon = " + loai_mon.MaLoai1;
query.insert(sql);
query.insert(sql);
}
public void update(Class_LoaiMon loai_mon)
{
string sql = "UPDATE LoaiMon WHERE SET MaLoai=" + loai_mon.MaLoai1 + ",TenLoai=N'" +
loai_mon.TenLoai1 + "')";
query.insert(sql);
}
public void insert(Class_LoaiMon loai_mon)
{
string sql = "INSERT INTO LoaiMon(MaLoai,TenLoai) VALUES(";
sql += loai_mon.MaLoai1 + ",N'" + loai_mon.TenLoai1 + "')";
query.insert(sql);
}
public new List <Class_LoaiMon> Select()
{
string sql = "SELECT * FROM LoaiMon";
List <Class_LoaiMon> list = new List <Class_LoaiMon>();
query.ketnoiSQL();
using (DbDataReader reader = query.Reader(sql))
{
if (reader.HasRows)
{
while (reader.Read())
{
string MaLoai = reader.GetString(0);
string TenLoai = reader.GetString(1);
Class_LoaiMon Test = new Class_LoaiMon(MaLoai, TenLoai);
list.Add(Test);
}
}
}
query.DongketnoiSQL();
return(list);
}