Comments by JamesHoward972 (Top 1 by date)

Actually, MemoryStream doesn't use any unmanaged resource, so there is no need to Dispose it, although it is a good practice. Even if it had any unmanaged resource, I think Microsoft is following it's own dispose pattern (http://msdn.microsoft.com/en-us/library/b1yfkh5e%28v=VS.100%29.aspx) so the resource would be disposed in the finalizer.