private void updateBtn_Click(object sender, EventArgs e)
{
string name = nameBox.Text;
int price = Convert.ToInt32(priceBox.Text);
string category = categoryBox.Text;
nameBox.Text = "";
priceBox.Text = "";
categoryBox.Text = "";
IdentityEventArgs args = new IdentityEventArgs(name, category, price);
IdentityUpated(this, args);
Close();
}
//use of delegete, linq and event to sell the data
private void SellRecord(object sender, IdentityEventArgs ea)
{
if (ea.Name != "" && ea.Name.Length > 0 && ea.Category != "" && ea.Price > 0)
{
List <ItemDetail> modelList = new List <ItemDetail>();
if (!this.status)
{
itemList.Add(new ItemDetail()
{
Name = ea.Name,
Price = ea.Price,
Category = ea.Category,
Quantity = 1
});
var items = itemList.GroupBy(x => new { x.Name });
foreach (var item in items)
{
modelList.Add(new ItemDetail()
{
Name = item.Key.Name,
Price = item.Sum(x => x.Price),
Quantity = item.Sum(x => x.Quantity),
Category = (from x1 in item select x1.Category).FirstOrDefault().ToString()
});
}
}
Ctrl.ClearGridView(sellDataView);
for (int i = 0; i < modelList.Count; i++)
{
Console.WriteLine(i);
sellDataView.Rows.Add();
sellDataView.Rows[i].Cells[0].Value = modelList[i].Name;
sellDataView.Rows[i].Cells[1].Value = modelList[i].Category;
sellDataView.Rows[i].Cells[2].Value = modelList[i].Price;
sellDataView.Rows[i].Cells[3].Value = modelList[i].Quantity;
}
this.row = 0;
this.status = false;
}
else
{
MessageBox.Show("Invalid name and product. Fill in the boxes with correct names.");
}
}
//use of delegete and event to update the data
private void UpdateRecord(object sender, IdentityEventArgs ea)
{
dataGridView.Rows[row].Cells[0].Value = ea.Name;
dataGridView.Rows[row].Cells[1].Value = ea.Category;
dataGridView.Rows[row].Cells[2].Value = ea.Price;
}