System.Net.Cache.RangeStream.RangeStream C# (CSharp) Method

        internal RangeStream (Stream parentStream, long offset, long size): base() {
            m_ParentStream      = parentStream;
            m_Offset            = offset;
            m_Size              = size;
            if (m_ParentStream.CanSeek) {
                m_ParentStream.Position = offset;
                m_Position = offset;
            }
            else {
                // for now we expect a FileStream that is seekable.
                throw new NotSupportedException(SR.GetString(SR.net_cache_non_seekable_stream_not_supported));
            }
        }