private void But_Click1(object sender, EventArgs e)
{
bool isEmpty = !lt.Any();
bool check = false;
if (isEmpty)
{
Model1 db = new Model1();
double gia = 0;
foreach (Drink j in db.Drink)
{
if (j.id_Drink == Convert.ToInt32(((Button)sender).Tag))
{
gia = j.price;
}
}
lt.Add(new Cart
{
Id = Convert.ToInt32(((Button)sender).Tag),
NameSp = ((Button)sender).Name.ToString(),
SoLuong = 1,
Tien = gia,
});
double total = 0;
foreach (Cart i in lt)
{
total += i.Tien;
}
textBox1.Text = total.ToString();
dataGridView1.DataSource = null;
var l = lt.Select(p => new { p.NameSp, p.SoLuong, p.Tien });
dataGridView1.DataSource = l.ToList();;
}
else
{
Model1 db = new Model1();
double gia = 0;
foreach (Drink j in db.Drink)
{
if (j.id_Drink == Convert.ToInt32(((Button)sender).Tag))
{
gia = j.price;
}
}
for (int i = 0; i <= lt.Count - 1; i++)
{
if (String.Compare(lt[i].Id.ToString(), ((Button)sender).Tag.ToString(), true) == 0)
{
lt[i].SoLuong += 1;
lt[i].Tien = gia * lt[i].SoLuong;
check = true;
}
}
if (check == false)
{
lt.Add(new Cart
{
Id = Convert.ToInt32(((Button)sender).Tag),
NameSp = ((Button)sender).Name.ToString(),
SoLuong = 1,
Tien = gia,
});
}
double total = 0;
foreach (Cart i in lt)
{
total += i.Tien;
}
textBox1.Text = total.ToString();
dataGridView1.DataSource = null;
var l = lt.Select(p => new { p.NameSp, p.SoLuong, p.Tien });
dataGridView1.DataSource = l.ToList();;
}
}