Simple Image Scroller Slide Show using Silverlight ListBox control


Last week I was working on a image scroll-er slide show using silverlight listbox control and it worked great and I thought I’d  share this.

Click here to view the live demo (images may take a while to load)
Click here to download the article

If you find the Image Scroller code library useful, please consider donating

Xaml C# Code

public class ImageScroller
 {
 public string Url { get; set; }
 }

 public partial class ImageGallery : UserControl
 {
 int index = 0;

 void StartSlideShow()
 {
 DispatcherTimer timer = new DispatcherTimer();
 timer.Interval = TimeSpan.FromMilliseconds(2500); //delayed for 2.5 seconds
 timer.Tick += (sender, e) =>
 {
 lbScrollGallery.ScrollIntoView(lbScrollGallery.Items[index]); //scroll to the current item
 lbScrollGallery.SelectedIndex = index; //highlight the selected item in the list box scroller
 ImageScroller item = (ImageScroller)lbScrollGallery.Items[index]; // getting the current item
 imgPreview.Source = new BitmapImage(new Uri(item.Url, UriKind.Relative));
 if (index < lbScrollGallery.Items.Count - 1)
 {
 index++;
 }
 else
 {
 lbScrollGallery.ScrollIntoView(lbScrollGallery.Items[0]); //scroll to the first item
 index = 0; //reset the index when it reaches to the last item
 }
 };
 timer.Start();
 }

 public ImageGallery()
 {
 InitializeComponent();
 LoadImages();
 StartSlideShow();
 }

 void LoadImages()
 {
 lbScrollGallery.ItemsSource = new List<ImageScroller>
 {
 new ImageScroller
 {
 Url = "images/Chrysanthemum.jpg"
 },
 new ImageScroller
 {
 Url = "images/Desert.jpg"
 },
 new ImageScroller
 {
 Url = "images/Hydrangeas.jpg"
 },
 new ImageScroller
 {
 Url = "images/Jellyfish.jpg"
 },
 new ImageScroller
 {
 Url = "images/Koala.jpg"
 },
 new ImageScroller
 {
 Url = "images/Lighthouse.jpg"
 },
 new ImageScroller
 {
 Url = "images/Penguins.jpg"
 },
 new ImageScroller
 {
 Url = "images/Tulips.jpg"
 }
 };

 imgPreview.Source = new BitmapImage(new Uri("images/Chrysanthemum.jpg", UriKind.Relative)); //load default image while page loads
 }

 void ScrollerSelectionChanged(object sender, SelectionChangedEventArgs e)
 {
 ListBox listbox = (ListBox)sender;
 ImageScroller item = (ImageScroller)listbox.SelectedItem;
 if(item != null && ! string.IsNullOrEmpty(item.Url))
 {
 imgPreview.Source = new BitmapImage(new Uri(item.Url, UriKind.Relative));
 index = listbox.SelectedIndex;
 lbScrollGallery.ScrollIntoView(lbScrollGallery.Items[index]);
 }
 }
 }

Hope this help and If you have any comments, please feel free to write your feedback.

Click here to view the live demo (images may take a while to load)

You can download the entire article from here

If you find the Image Scroller code library useful, please consider donating

Thanks
Deepu

Advertisements