private void txtMaHang_TextChanged(object sender, EventArgs e)
{
if (kiemTraTonTai(txtMaHang.Text) != null)
{
Hang h = kiemTraTonTai(txtMaHang.Text);
txtTenHang.Text = h.TenHang;
txtDonViTinh.Text = h.DonViTinh;
txtDonGia.Text = h.DonGia.ToString();
cboLoai.DataSource = bulLoaiHang.layDanhSachMaLoaiHang(txtMaHang.Text);
cboLoai.DisplayMember = "TenLoai";
cboLoai.ValueMember = "MaLoai";
int vt = -1;
for (int i = 0; i < bulLoaiHang.layDanhSachMaLoaiHang(txtMaHang.Text).Count; i++)
{
if (bulLoaiHang.layDanhSachMaLoaiHang(txtMaHang.Text)[i].MaLoai.Contains(h.MaLoai))
{
vt = i;
break;
}
}
cboLoai.SelectedIndex = vt;
txtSoLuongCo.Text = h.SoLuongCo.ToString();
cboNCC.DataSource = bulNhaCungCap.layDanhSachMaNCC(txtMaHang.Text);
cboNCC.DisplayMember = "TenNhaCungCap";
cboNCC.ValueMember = "MaNhaCungCap";
for (int i = 0; i < bulNhaCungCap.layDanhSachMaNCC(txtMaHang.Text).Count; i++)
{
if (bulNhaCungCap.layDanhSachMaNCC(txtMaHang.Text)[i].MaNhaCungCap.Contains(h.MaNhaCungCap))
{
vt = i;
break;
}
}
cboNCC.SelectedIndex = vt;
txtTenHang.Enabled = false;
txtDonViTinh.Enabled = false;
txtDonGia.Enabled = false;
cboLoai.Enabled = false;
txtSoLuongCo.Enabled = false;
cboNCC.Enabled = false;
btnXoaHang.Enabled = true;
}
else
{
Hang h = kiemTraTonTai(txtMaHang.Text);
txtTenHang.Text = "";
txtDonViTinh.Text = "";
txtDonGia.Text = "";
//cboLoai.SelectedValue = "";
txtSoLuongCo.Text = "";
//cboNCC.SelectedValue = "";
btnXoaHang.Enabled = false;
}
}
private void frmThemHang_Load(object sender, EventArgs e)
{
cboLoai.DataSource = bulLoaiHang.layDanhSachMaLoaiHang(txtMaHang.Text);
cboLoai.DisplayMember = "TenLoai";
cboLoai.ValueMember = "MaLoai";
cboNCC.DataSource = bulNhaCungCap.layDanhSachMaNCC(txtMaHang.Text);
cboNCC.DisplayMember = "TenNhaCungCap";
cboNCC.ValueMember = "MaNhaCungCap";
while (true)
{
Random rd = new Random();
string ma = "MH";
int n = rd.Next(0, 1000);
ma = ma + n;
if (!kiemTraTonTai(ma))
{
txtMaHang.Text = ma;
break;
}
}
}