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Improve images caching

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Improve error reporting
Implemented IsolatedStorageExplorer feature
This commit is contained in:
Claudiu Farcas
2011-04-13 06:52:25 +03:00
parent a297460f37
commit 72c1bbdcfc
7 changed files with 144 additions and 50 deletions
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main/Libs/WPImageCaching/ImageDownloadHelper.cs
+38 -13
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@@ -59,10 +59,17 @@ namespace WPImageCaching
try
{
var response = (HttpWebResponse)transfer.WebRequest.EndGetResponse(result);
string newKey = transfer.WebRequest.RequestUri.ToString();
//Bild wurde nicht geändert seit dem letzten Aufruf
if (response.StatusCode == HttpStatusCode.NotModified)
{
if (ImageCache.imageCache.ContainsKey(newKey))
{
ImageCache.imageCache[newKey].Expiration = (response.Headers["Expires"] != null) ? DateTime.Parse(response.Headers["Expires"]) : DateTime.Now.AddDays(EXPIRATIONDAYS);
//save updated
ImageCache.SaveCachedImageInfo();
}
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
@@ -80,22 +87,40 @@ namespace WPImageCaching
}
lock (ImageCache._lock)
{
string newKey = transfer.WebRequest.RequestUri.ToString();
if (ImageCache.imageCache.ContainsKey(newKey))
{
//Setzen des Bildes
Deployment.Current.Dispatcher.BeginInvoke(
() =>
{
using (IsolatedStorageFile ifs = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream fs = ifs.OpenFile(transfer.Item.LocalFilename, FileMode.Open))
bool isExpired = (DateTime.Compare(DateTime.Now, ImageCache.imageCache[newKey].Expiration) >= 0);
if (!isExpired)
{
//Setzen des Bildes
Deployment.Current.Dispatcher.BeginInvoke(
() =>
{
transfer.Image.SetSource(fs);
}
}
});
return;
using (
IsolatedStorageFile ifs = IsolatedStorageFile.GetUserStoreForApplication())
{
using (
IsolatedStorageFileStream fs = ifs.OpenFile(
transfer.Item.LocalFilename, FileMode.Open))
{
transfer.Image.SetSource(fs);
}
}
});
return;
}
else
{
if (IsolatedStorageFile.GetUserStoreForApplication().FileExists(ImageCache.imageCache[newKey].LocalFilename))
{
//remove old image
IsolatedStorageFile.GetUserStoreForApplication().DeleteFile(ImageCache.imageCache[newKey].LocalFilename);
//
ImageCache.imageCache.Remove(newKey);
//Speichern der Bildinformationen
ImageCache.SaveCachedImageInfo();
}
}
}
//Hat das Bild eine neue ID?
if (response.Headers["ETag"] != null)