StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
12638859
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2012-09-28T11:09:15.553
FavoriteCount
0
LastActivityDate
2012-10-03T15:30:10.137
LastEditDate
2012-10-03T15:30:10.137
LastEditorUserId
367287
OwnerUserId
367287
ParentId
1878060
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
Based on this I made custom control which: <ul> <li>can download images asynchronously and get them from cache if image</li> <li>is thread safe</li> <li>was downloaded has dependency property to which you can bind to</li> <li>update images, providing new names in initial feed (don’t forget to maintain cache clean operation, e.g. you can parse your feed and asynchronously delete images with no links in feed)</li> </ul> <a href="http://ileonenko.wordpress.com/2012/09/28/local-image-caching-with-custom-control-in-wpf/" rel="nofollow">I made a blog post:</a>, and here's the code: <pre><code>public class CachedImage : Image { static CachedImage() { DefaultStyleKeyProperty.OverrideMetadata(typeof(CachedImage), new FrameworkPropertyMetadata(typeof(CachedImage))); } public readonly static DependencyProperty ImageUrlProperty = DependencyProperty.Register("ImageUrl", typeof(string), typeof(CachedImage), new PropertyMetadata("", ImageUrlPropertyChanged)); public string ImageUrl { get { return (string)GetValue(ImageUrlProperty); } set { SetValue(ImageUrlProperty, value); } } private static readonly object SafeCopy = new object(); private static void ImageUrlPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e) { var url = (String)e.NewValue; if (String.IsNullOrEmpty(url)) return; var uri = new Uri(url); var localFile = String.Format(Path.Combine(Globals.CacheFolder, uri.Segments[uri.Segments.Length - 1])); var tempFile = String.Format(Path.Combine(Globals.CacheFolder, Guid.NewGuid().ToString())); if (File.Exists(localFile)) { SetSource((CachedImage)obj, localFile); } else { var webClient = new WebClient(); webClient.DownloadFileCompleted += (sender, args) => { if (args.Error != null) { File.Delete(tempFile); return; } if (File.Exists(localFile)) return; lock (SafeCopy) { File.Move(tempFile, localFile); } SetSource((CachedImage)obj, localFile); }; webClient.DownloadFileAsync(uri, tempFile); } } private static void SetSource(Image inst, String path) { inst.Source = new BitmapImage(new Uri(path)); } } </code></pre> Now you can bind to it: <pre><code><Cache:CachedImage ImageUrl="{Binding Icon}"/> </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POHow do I cache images on the client for a WPF application?
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USIvan Leonenko
UserOwnerUserId
1. USIvan Leonenko
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.