c#-3.0 - 假设我正在尝试创建动画并且也想制作它的反向版本。我怎样才能完成它？

Question

    private void timer1_Tick(object sender, EventArgs e)
    {
        number_of_slides = imageList1.Images.Count;
        if (number_of_slides == 0) return;
        timer1.Interval = trackBar1.Value;
        pictureBox1.Image = imageList1.Images[i];
        listBox1.SelectedIndex = i;
        if (forward)
            i = (i+1) % number_of_slides;
        else
        {
            // Your code
            // for reverse order comes here!!!
        }

在这里，我正在尝试放置 7 张图像并制作动画及其反转。

标签： c#-3.0