Note: This method is new in the .NET Framework version 2.0.
Reads a number of bytes from the
SerialPort input buffer and writes those bytes into a byte array at a given offset.
Namespace: System.IO.Ports
Assembly: System (in system.dll)
Visual Basic (Declaration)
Public Function Read ( _
buffer As Char(), _
offset As Integer, _
count As Integer _
) As Integer
Dim instance As SerialPort
Dim buffer As Char()
Dim offset As Integer
Dim count As Integer
Dim returnValue As Integer
returnValue = instance.Read(buffer, offset, count)
public int Read (
char[] buffer,
int offset,
int count
)
public:
int Read (
array<wchar_t>^ buffer,
int offset,
int count
)
public int Read (
char[] buffer,
int offset,
int count
)
public function Read (
buffer : char[],
offset : int,
count : int
) : int
Parameters
- buffer
The character array to write the input to.
- offset
The offset in the buffer array to begin writing.
- count
The number of bytes to read.
Return Value
The number of bytes read.
Use this method for reading bytes from the serial port.
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.
.gif) Note |
|---|
| Because the SerialPort 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 SerialPort class. |
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
.NET Framework
Supported in: 2.0
.NET Compact Framework
Supported in: 2.0