TCnSerialPort.ReadByte Method
Synchronously reads one byte from the SerialPort input buffer.
public function ReadByte: Integer;
Return Value
The byte, cast to an Int32, or -1 if the end of the stream has been read.
This method reads one byte.
Use caution when using ReadByte and ReadChar together. Switching between reading bytes and reading
characters can cause extra data to be read and/or other unintended
behavior. If it is necessary to switch between reading text and reading
binary data from the stream, select a protocol that carefully defines
the boundary between text and binary data, such as manually reading
bytes and decoding the data.
Note |
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Because the TCnSerialPort class buffers data, and the stream contained in the BaseStream property does not, the two might conflict about how many bytes are available to read. The BytesToRead property can indicate that there are bytes to read, but these bytes might not be accessible to the stream contained in the BaseStream property because they have been buffered to the TCnSerialPort class. |
