public override void Update(CacheItemInfo oldInfo, CacheItemInfo newInfo)
{
if (oldInfo.Equals(newInfo)) return;
var oldFilename = new FileItem(oldInfo).FileName;
var newFilename = new FileItem(newInfo).FileName;
PriorityQueue.AddStorageWorkItem(() =>
{
lock (LockObject)
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (store.FileExists(newFilename))
store.DeleteFile(newFilename);
using (var readStream = new IsolatedStorageFileStream(oldFilename, FileMode.Open, store))
using (var writeStream = new IsolatedStorageFileStream(newFilename, FileMode.Create, store))
using (var reader = new StreamReader(readStream))
using (var writer = new StreamWriter(writeStream))
{
writer.Write(reader.ReadToEnd());
}
store.DeleteFile(oldFilename);
}
}
});
}
