public qlLinhKienDataContext GetDataContext()
{
String str = @"Data Source=LAPTOP-A77BJ5G6\SQLEXPRESS;Initial Catalog=QuanLyLinhKien;Integrated Security=True";
dt = new qlLinhKienDataContext(str);
dt.Connection.Open();
return(dt);
}
public clsLinhKien()
{
dt = GetDataContext();
}