Why does this silverlight code get a "catastrophic failure" when reading a BitmapImage out of Isolat
- by Edward Tanguay
In a Silverlight app, I save a Bitmap like this:
public static void SaveBitmapImageToIsolatedStorageFile(OpenReadCompletedEventArgs e, string fileName)
{
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream isfs = new IsolatedStorageFileStream(fileName, FileMode.Create, isf))
{
Int64 imgLen = (Int64)e.Result.Length;
byte[] b = new byte[imgLen];
e.Result.Read(b, 0, b.Length);
isfs.Write(b, 0, b.Length);
isfs.Flush();
isfs.Close();
isf.Dispose();
}
}
}
and read it back out like this:
public static BitmapImage LoadBitmapImageFromIsolatedStorageFile(string fileName)
{
string text = String.Empty;
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!isf.FileExists(fileName))
return null;
using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream isoStream = isoStore.OpenFile(fileName, FileMode.Open))
{
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(isoStream);
return bitmapImage; // "Catastrophic Failure: HRESULT: 0x8000FFFF (E_UNEXPECTED))"
}
}
}
}
but this always gives me a "Catastrophic Failure: HRESULT: 0x8000FFFF (E_UNEXPECTED))" error.
I've seen this error before when I tried to read a png file* off a server which was actually a **text file, so I assume the Bitmap is not being saved correctly, I got the code here.
Can anyone see how the BitmapImage is not being saved correctly? Or why it would be giving me this error?
