private void initDataforbus()
{
BillBLL billBLL = new BillBLL();
cbbiletaa.DataSource = billBLL.GetALl();
cbbiletaa.DisplayMember = "Cmimi";
cbbiletaa.ValueMember = "billid";
cbbiletaa.SelectedIndex = -1;
}
private void Form1_Load(object sender, EventArgs e)
{
BillBLL billBLL = new BillBLL();
BusBLL bus = new BusBLL();
initDataforbus();
dgvbus.DataSource = bus.GetALl();
dgvbileta.DataSource = billBLL.GetALl();
}
public Billmanagment()
{
InitializeComponent();
datagridviewbill.DataSource = billBLL.GetALl();
}