ZipEntry size 0 in Silverlight4

Oct 14, 2011 at 3:05 AM
Edited Oct 14, 2011 at 3:08 AM

Using zf As New ZipFile(New IsolatedStorageFileStream("zf", FileMode.Open, store)
    For Each ze As ZipEntry In zf
        Dim entryName As String = ze.Name ' Get Name success
        Dim entrySize As long = ze.Size ' Get Size value = 0
    Next
End Using

How can I get really Size value ? 

Thanks