How to show listbox added items count in Label?

Question

private void button5_Click(object sender, EventArgs e)
{
    int gTotal = 1;


    for (int gCount = 0; gCount < listBox3.Items.Count - 1; gCount++)

    gTotal += (listBox3.Items.Add(gCount));

    label1.Text = gTotal.ToString();
}

Hey guys i'm not entirely sure of how to use Listboxes, but my question is how can I display the numbers that populate in my list box 3 to go into the label?

Answer 1

private void button5_Click(object sender, EventArgs e)
{
    int gTotal = 1;
    var collection = listBox3.Items.Cast<String>().ToList();

    for (int gCount = 0; gCount < collection.Count - 1; gCount++)
    {
        int item;
        if (int.TryParse(collection[gCount], out item)
        {
            gTotal += item;
        }
    }

    label1.Text = gTotal.ToString();
}

Cast the items to a List then make sure that items are ints, if so add them up.

Answer 2

Parse your items.

private void button5_Click(object sender, EventArgs e)
{
    int gTotal = 1;

    for (int gCount = 0; gCount < listBox3.Items.Count; gCount++)
         gTotal += int.Parse(listBox3.Items[gCount].ToString()); 
         // assuming all items in the listbox is an int.

    label1.Text = gTotal.ToString();
}

What trying to do