public void xoa()
{
Console.Clear();
Console.WriteLine("XOA THONG TIN HOA DON BAN ");
List <Hoadonban> list = spDLL.LayDSHoadonban();
string ma;
Console.Write("Nhap ma hoa don ban can xoa:");
ma = Console.ReadLine();
int i = 0;
for (i = 0; i < list.Count; ++i)
{
if (list[i].mahdb == ma)
{
break;
}
}
if (i < list.Count)
{
Hoadonban b = new Hoadonban(list[i]);
spDLL.Xoahoadonban(b);
}
else
{
Console.WriteLine("Khong ton tai ma san pham nay");
}
}
public List <Hoadonban> Timhoadonban(Hoadonban hdb)
{
List <Hoadonban> list = lhhdb.LayDSHoadonban();
List <Hoadonban> kq = new List <Hoadonban>();
//Voi gai tri ngam dinh ban dau
if (hdb.manvb == null && hdb.ngayban == null && hdb.Soluong == 0 && hdb.Gia == 0 && hdb.mahdb == null)
{
kq = list;
}
//Tim theo mavb
else if (hdb.mahdb != "")
{
for (int i = 0; i < list.Count; ++i)
{
if (list[i].mahdb.IndexOf(hdb.mahdb) >= 0)
{
kq.Add(new Hoadonban(list[i]));
}
}
}
//Cac truong hop khac cac ban tu lam
else
{
kq = null;
}
return(kq);
}
//Chèn một bản ghi học sinh vào tệp
public void Themhoadonban(Hoadonban sp)
{
string mahdb = DateTime.Now.ToString("ss");
StreamWriter fwrite = File.AppendText(txtfile);
fwrite.WriteLine();
fwrite.Write(mahdb + "#" + sp.manvb + "#" + sp.ngayban + "#" + sp.Soluong + "#" + sp.Gia);
fwrite.Close();
}
//Chèn một bản ghi hang hoa vào tệp
public void Insert(Hoadonban hdb)
{
int mah = Mahdb + 1;
StreamWriter fwrite = File.AppendText(txtfile);
fwrite.WriteLine();
fwrite.Write(mah + "#" + hdb.mahdb + "#" + hdb.manvb + "#" + hdb.ngayban + "#" + hdb.tongtien);
fwrite.Close();
}
public void Themhoadonban(Hoadonban hdb)
{
if (hdb.manvb != "")
{
lhhdb.Themhoadonban(hdb);
}
else
{
throw new Exception("Du lieu sai");
}
}
public void Nhap()
{
Console.Clear();
Console.WriteLine(" NHAP THONG TIN HOA DON BAN ");
Hoadonban sp = new Hoadonban();
// Console.Write("Nhap ma hoa don ban:"); sp.mahdb = int.Parse(Console.ReadLine());
Console.Write("Nhap ma nvb:"); sp.manvb = Console.ReadLine();
Console.Write("Nhap ngay ban :"); sp.ngayban = DateTime.Parse(Console.ReadLine());
Console.Write(" Nhap so luong :"); sp.Soluong = int.Parse(Console.ReadLine());
Console.Write("Nhap gia :"); sp.Gia = double.Parse(Console.ReadLine());
spDLL.Themhoadonban(sp);
}
public void Sua()
{
Console.Clear();
Console.WriteLine("SUA THONG TIN HOA DON BAN");
List <Hoadonban> list = spDLL.LayDSHoadonban();
string ma;
Console.Write("Nhap ma hoa don ban can sua:");
ma = Console.ReadLine();
int i = 0;
for (i = 0; i < list.Count; ++i)
{
if (list[i].mahdb == ma)
{
break;
}
}
if (i < list.Count)
{
Hoadonban sp = new Hoadonban(list[i]);
Console.Write("Nhap ma nvb:");
string manvb = Console.ReadLine();
if (manvb != "")
{
sp.manvb = manvb;
}
Console.Write("ngay ban moi:");
DateTime nb = DateTime.Parse(Console.ReadLine());
sp.ngayban = nb;
Console.Write("Nhap so luong:");
int slg = int.Parse(Console.ReadLine());
if (slg > 0)
{
sp.Soluong = slg;
}
Console.Write("Nhap gia moi:");
int g = int.Parse(Console.ReadLine());
if (g > 0)
{
sp.Soluong = g;
}
spDLL.Suahoadonban(sp);
}
else
{
Console.WriteLine("Khong ton tai ma hoa don ban nay");
}
}
public void Xoahoadonban(Hoadonban xhdb)
{
int i;
List <Hoadonban> list = lhhdb.LayDSHoadonban();
for (i = 0; i < list.Count; ++i)
{
if (list[i].mahdb == xhdb.mahdb)
{
break;
}
}
if (i < list.Count)
{
list.RemoveAt(i);
lhhdb.Update(list);
}
else
{
throw new Exception("Khong ton tai ma nay");
}
}
