public override IAsyncResult BeginRead(byte[] buffer, int offset, int size, AsyncCallback cb, object state)
{
CheckDisposed();
if (!isRead)
{
throw new NotSupportedException();
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException("offset+size");
}
ReadDelegate del = ReadInternal;
#if SSHARP
return(del.BeginInvokeEx(cb, state, buffer, offset, size));
#else
return(del.BeginInvoke(buffer, offset, size, cb, state));
#endif
}