private void btnZoom_Click(object sender, EventArgs e)
        {
            ImageList imgs = new ImageList();
            imgs.ImageSize = new Size(100, 100);

            string[] paths = { };
            paths = Directory.GetFiles("TestFolder");

            try
            {
                foreach (string path in paths)
                {
                    imgs.Images.Add(Image.FromFile(path));
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            listView1.SmallImageList = imgs;
            listView1.Items.Add("2",0);
        }