//Update product
private void button3_Click(object sender, EventArgs e)
{
if (textBox2.Text.Length == 0 || textBox3.Text.Length == 0 || comboBox1.Text.Length == 0)
{
MessageBox.Show("invalid enter !");
}
else
{
products p = new products();
context c = new context(new check_product());
if (c.my_function(textBox2.Text) && int.Parse(textBox3.Text) != 0)
{
if (comboBox1.Text == "NOT CHANGE")
{
p.update_product(textBox2.Text, int.Parse(textBox3.Text), 0);
MessageBox.Show("Done");
}
else
{
p.update_product(textBox2.Text, int.Parse(textBox3.Text), int.Parse(comboBox1.Text));
MessageBox.Show("Done");
}
}
else
{
}
}
}
public string return_product(int bill_id, string product, int quantity)
{
string return_message;
if (File.Exists("bills.txt"))
{
FileStream fs = new FileStream("bills.txt", FileMode.Open);
BinaryFormatter f = new BinaryFormatter();
Dictionary <int, orders> list = new Dictionary <int, orders>();
KeyValuePair <string, int> li = new KeyValuePair <string, int>();
// bool falg = false;
DateTime n = DateTime.Now;
while (fs.Position < fs.Length)
{
orders o = (orders)f.Deserialize(fs);
list[o.id] = o;
}
fs.Close();
if (list.ContainsKey(bill_id))
{
if (list[bill_id].date.Day - n.Day <= 14)
{
for (int i = 0; i < list[bill_id].products.Count; i++)
{
if (list[bill_id].products.ElementAt(i).Key == product)
{
if (list[bill_id].products.ElementAt(i).Value >= quantity && quantity != 0)
{
if (list[bill_id].products.ElementAt(i).Value == quantity)
{
li = new KeyValuePair <string, int>(product, quantity);
list[bill_id].products.Remove(li);
products p = new products();
list[bill_id].total -= p.return_price(product) * quantity;
if (list[bill_id].products.Count == 0)
{
list.Remove(bill_id);
}
FileStream format = new FileStream("bills.txt", FileMode.Truncate);
format.Close();
FileStream file = new FileStream("bills.txt", FileMode.Append);
for (int j = 0; j < list.Count; j++)
{
f.Serialize(file, list.ElementAt(j).Value);
}
file.Close();
list.Clear();
p.update_product(product, quantity, 0);
return_message = "done";
list.Clear();
return(return_message);
}
else
{
int x = 0;
x = list[bill_id].products.ElementAt(i).Value - quantity;
li = new KeyValuePair <string, int>(product, list[bill_id].products.ElementAt(i).Value);
list[bill_id].products.Remove(li);
li = new KeyValuePair <string, int>(product, x);
list[bill_id].products.Add(li);
products p = new products();
list[bill_id].total -= p.return_price(product) * quantity;
if (list[bill_id].products.Count == 0)
{
list.Remove(bill_id);
}
FileStream format = new FileStream("bills.txt", FileMode.Truncate);
format.Close();
FileStream file = new FileStream("bills.txt", FileMode.Append);
for (int j = 0; j < list.Count; j++)
{
f.Serialize(file, list.ElementAt(j).Value);
}
file.Close();
list.Clear();
return_message = "done";
p.update_product(product, quantity, 0);
list.Clear();
return(return_message);
}
}
else
{
return_message = "invalid quantity";
return(return_message);
}
}
}
return_message = "product not found";
return(return_message);
}
else
{
return_message = "over 14 day";
return(return_message);
}
}
else
{
return_message = "invalid bill";
return(return_message);
}
}
else
{
return_message = "invalid bill";
return(return_message);
}
}