System.IO.Ports.SerialPortStream.Read C# (CSharp) Méthode

		public override int Read ([In,Out] byte[] buffer, int offset, int count)
		{
			CheckDisposed ();
			if (buffer == null)
				throw new ArgumentNullException ("buffer");
			if (offset < 0 || count < 0)
				throw new ArgumentOutOfRangeException ("offset or count less than zero.");

			if (buffer.Length - offset < count )
				throw new ArgumentException ("offset+count",
							      "The size of the buffer is less than offset + count.");
			
			int error;
			bool poll_result = poll_serial (fd, out error, read_timeout);
			if (error == -1)
				ThrowIOException ();

			if (!poll_result) {
				// see bug 79735   http://bugzilla.ximian.com/show_bug.cgi?id=79735
				// should the next line read: return -1; 
				throw new TimeoutException();
			}

			return read_serial (fd, buffer, offset, count);
		}