array and writes the array’s contents to a port: vb Dim byteBuffer 2 As Byte byteBuffer O = 117 byteBuffer l = 115 byteBuffer 2 = 98 myComPort.Write byteBuffer, 0, 3 vc# byte byteBuffer = new byte 3 ; byteBuffer 0 = 117; byteBuffer 1 = 115; byteBuffer 2 = 98; myComPort.Write byteBuffer, 0, 3 ; Reading Bytes The SerialPort class provides two methods for reading bytes. The Read method can copy a specified number of received bytes from the receive buffer into a byte array beginning at a specified offset. This example reads up to three received bytes, stores the bytes beginning at offset 1 in the byteBuffer array, and displays the result: vb Dim byteBuffer As Byte = 0, 0, 0, 0 Dim count As Integer Dim numberOfReceivedBytes As Integer myComPort.Read byteBuffer, 1,3 For count = 0 To 3 Console.WriteLine CStr byteBuffer count Next count 168 Using .NET’s SerialPort Class vc# byte byteBuffer = new byte 4 0, 0, 0, 0 ; Int32 count; Int32 numberOfReceivedBytes; myComPort.Read byteBuffer, 1,3 ; for count = 0; count <= 3; count++ Console.WriteLine byteBuffer count .ToString ; If the remote port sends bytes with values 10, 20, and 30, the output is this: 0 10 20 30 The Read method doesn’t wait for the specified number of bytes to arrive. The method returns if there is at least one received byte in the buffer. For example, if the remote port has sent a single byte with a value of 10, the Read method in the example above returns on receiving the byte and the output is this: 0 10 0 0 Reading a byte removes the byte from the receive buffer. If no bytes arrive, the method times out as specified by the ReadTimeout property. Another option for reading bytes is the ReadByte method, which reads one byte at a time: vb Dim receivedByte As Integer receivedByte = myComPort.ReadByte Console.WriteLine receivedByte vc# Int32 receivedByte; receivedByte = myComPort.ReadByteO; Console.WriteLine receivedByte ; Note that the ReadByte method reads a byte but returns an In prom-electric.ru