Counting Items from a Listview

Question

I need to count how many items you have added in one listview, I did the following:

LV1.Items.BeginUpdate;
 try
   for i := 0 to LV1.Items.Count-1 do
     Label11.Caption := inttostr(i+1);
 finally
  LV1.Items.EndUpdate;
 end;
end;

It works more has a bug, when I add 2 ITEMS, 2 appears. When I delete the 2 ITEMS instead of 0, "1" appears. Any ideas?

Answer 1

You can count the items of a Listview through the use of Listview.Items.count(as already mentioned in comment from Motta).

ShowMessage('Quantidade de Itens ' + IntToStr(ListView1.Items.Count));

While to code related problem posted by you, the error is in:

Label11.Caption := inttostr(i+1); // O erro: i+1

Corrected code

var
  I: integer;
begin
  LV1.Items.BeginUpdate;
  try
    for i := 0 to LV1.Items.Count do
      Label1.Caption := IntToStr(i);
  finally
    LV1.Items.EndUpdate;
end;

But the best method to do this is to use the Listview.Items.count.