public frmBillInf(int id, string sodt, int thang) : this()
{
dtgvBillP.DataSource = (from e in cal.ListAll()
where e.TGBD.Month == thang
where e.SoDT == sodt
select e).ToList();
textBox3.Text = "50 .000 VNĐ";
var ListBill = from all in cal.ListAll()
where all.SoDT == sodt.ToString()
where all.TGBD.Month == thang
select all;
decimal?tinhtongtien()
{
decimal?sum = 0;
foreach (var item in ListBill)
{
sum += item.ThanhTien;
}
return(sum);
}
textBox2.Text = tinhtongtien().ToString() + "VNĐ";
}
public frmHome()
{
InitializeComponent();
SimDAO d = new SimDAO();
dataGridView1.DataSource = a.ListAll();
fr = this;
}