Hi, I basically want to add up the contents of a list box (in VB6) and display it in a textbox, it will only be numbers in the list.

Can anyone help?

thanks  =Paul 

 I dont know VB so i have typed the code in C#

Try this  

private void button1_Click(object sender, EventArgs e)
        {
            int a;
            int b = 0;

            for (int i = 0; i < listBox1.Items.Count ; i++)
            {
                a = Convert.ToInt32(listBox1.Items[i]);
                b = b + a;
            }
            textBox1.Text = b.ToString();
        }