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    <p>I don't know if you want a slider that shows only one picture at a time or more, but you can adapt the code if you need the latter. </p> <pre><code>private void showImage(string path) { Image imgtemp = Image.FromFile(path); pictureBox1.Width = imgtemp.Width / 2; pictureBox1.Height = imgtemp.Height / 2; pictureBox1.Image = imgtemp; } </code></pre> <p>If you want it to work only on an automated mode, use only one method:</p> <pre><code>private void prevImage() { if(selected == 0) { selected = folderFile.Length - 1; showImage(folderFile[selected]); } else { selected = selected - 1; showImage(folderFile[selected]); } } private void nextImage() { if(selected == folderFile.Length - 1) { selected = 0; showImage(folderFile[selected]); } else { selected = selected + 1; showImage(folderFile[selected]); } } </code></pre> <p>Now the timer and the start slideshow button: </p> <pre><code>private void timer1_Tick(object sender, System.EventArgs e) { nextImage(); } private void Start_Click(object sender, System.EventArgs e) { if(timer1.Enabled == true) { timer1.Enabled = false; Start.Text = "&lt;&lt; START Slide Show &gt;&gt;"; } else { timer1.Enabled = true; Start.Text = "&lt;&lt; STOP Slide Show &gt;&gt;"; } } </code></pre> <p>From <a href="http://www.codeproject.com/Articles/23082/A-Simple-Image-Slide-Show" rel="nofollow">here</a>. However, if you need something more than this you can read check <a href="http://documentation.devexpress.com/#WindowsForms/clsDevExpressXtraEditorsControlsImageSlidertopic" rel="nofollow">ImageSlider from devexpress</a>.</p>
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