Visual Studio Serial Port Communication

This extension for Visual Studio allows you debug programs that work with serial port. Features: Read data from serial port. Write data to serial port. A lot of settings. Userfriendly interface. Support Visual Studio color scheme. Redirect output from serial port to file. TODO: Write data from file to serial port. Nov 28, 2016 This program display the data from serial port. For more details read 'Serailport-communicatio-Test' ducment Windows How to implement serial port communication in.NET sample in C# for Visual Studio 2015. ' Use this code inside a project created with the Visual Basic Windows Desktop Console Application template. ' Replace the default code in Module1.vb with this code. Use this class to control a serial port file resource. This class provides synchronous and event-driven I/O, access to pin and break states, and access to serial driver.

8 Apr 2012CPOL

Serial Communication with the .NET Framework in Winforms

Introduction

Serial port data can be read in many ways and many devices communicate via the serial port. In my project I had the need to implement serial port communication for a RFID reader. This is a sample example to read data from the serial port and display on the Windows Forms TextBox control.

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Using the code

To begin, let's create a C# Windows Forms application in Visual Studio 2008 (hope it will work in VS 2005/2010 also, though not tested by myself). Add a textbox, a button control and a SerialPort control on to the form.

Declare a string variable as private:

Visual Studio Serial Port Communication Software

In the form Load event , write the code as shown below:

Although the code is self explanatory, I will explain little.

When the application starts, the serial port is opened to read the received data,you need to set up an event.

It is always better to set up the event before the serial port is opened.

Now lets declare an event handler to handle the event. The code to manipulate the read data can be specified here.

In my example the RFID tag had 12 letters value and only one card need to be read till a particular operation is completed. So, I have set a condition to close the port if string variable has length of 12. Actually RFID readers can read more than 100 tags per minute. Then you can store the values in some array and according to your need you can manipulate them. But if your tags have the same count like 878BGFFJJJHG, 78766HGGBVVV and you have to make sure that each tag is read then you can specify some condition like the above code.

You can use threading also but if you don't like to use threading then you can use a condition.

I insist that you should use condition as the above code for a tag [78766HGGBVVV] may return values of one letter at a time and it will be very fast. So to make sure that a tag has been read completely find the length and use the condition to do some operation or read another tag.

Now, you can't assign the value read directly to a textbox in the same event handler as it will throw some exception. You have to use the Invoke method to call your method, which can do the appending work in case of my program or manipulation work in your problem etc.

The below DisplayText method is called by the invoke method.

After the read operation is completed make sure you close the serial port.

Points of Interest

There are many ways to read data from serial port.

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Definition

Inheritance

MarshalByRefObjectMarshalByRefObjectMarshalByRefObjectMarshalByRefObject

SerialPortSerialPort Visual studio c# serial communication (serial port) tutorial

Serial Port Visual Studio

SerialPortSerialPort

Examples

The following code example demonstrates the use of the SerialPort class to allow two users to chat from two separate computers connected by a null modem cable. In this example, the users are prompted for the port settings and a username before chatting. Both computers must be executing the program to achieve full functionality of this example.

Remarks

Use this class to control a serial port file resource. This class provides synchronous and event-driven I/O, access to pin and break states, and access to serial driver properties. Additionally, the functionality of this class can be wrapped in an internal Stream object, accessible through the BaseStream property, and passed to classes that wrap or use streams.

The SerialPort class supports the following encodings: ASCIIEncoding, UTF8Encoding, UnicodeEncoding, UTF32Encoding, and any encoding defined in mscorlib.dll where the code page is less than 50000 or the code page is 54936. You can use alternate encodings, but you must use the ReadByte or Write method and perform the encoding yourself.

You use the GetPortNames method to retrieve the valid ports for the current computer.

If a SerialPort object becomes blocked during a read operation, do not abort the thread. Instead, either close the base stream or dispose of the SerialPort object.

Visual Studio Serial Port Tutorial

Constructors

SerialPort()SerialPort()SerialPort()SerialPort()	Initializes a new instance of the SerialPort class.
SerialPort(IContainer)SerialPort(IContainer)SerialPort(IContainer)SerialPort(IContainer)	Initializes a new instance of the SerialPort class using the specified IContainer object.
SerialPort(String)SerialPort(String)SerialPort(String)SerialPort(String)	Initializes a new instance of the SerialPort class using the specified port name.
SerialPort(String, Int32)SerialPort(String, Int32)SerialPort(String, Int32)SerialPort(String, Int32)	Initializes a new instance of the SerialPort class using the specified port name and baud rate.
SerialPort(String, Int32, Parity)SerialPort(String, Int32, Parity)SerialPort(String, Int32, Parity)SerialPort(String, Int32, Parity)	Initializes a new instance of the SerialPort class using the specified port name, baud rate, and parity bit.
SerialPort(String, Int32, Parity, Int32)SerialPort(String, Int32, Parity, Int32)SerialPort(String, Int32, Parity, Int32)SerialPort(String, Int32, Parity, Int32)	Initializes a new instance of the SerialPort class using the specified port name, baud rate, parity bit, and data bits.
SerialPort(String, Int32, Parity, Int32, StopBits)SerialPort(String, Int32, Parity, Int32, StopBits)SerialPort(String, Int32, Parity, Int32, StopBits)SerialPort(String, Int32, Parity, Int32, StopBits)	Initializes a new instance of the SerialPort class using the specified port name, baud rate, parity bit, data bits, and stop bit.

Fields

InfiniteTimeoutInfiniteTimeoutInfiniteTimeoutInfiniteTimeout

Indicates that no time-out should occur.

Properties

BaseStreamBaseStreamBaseStreamBaseStream	Gets the underlying Stream object for a SerialPort object.
BaudRateBaudRateBaudRateBaudRate	Gets or sets the serial baud rate.
BreakStateBreakStateBreakStateBreakState	Gets or sets the break signal state.
BytesToReadBytesToReadBytesToReadBytesToRead	Gets the number of bytes of data in the receive buffer.
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CanRaiseEventsCanRaiseEventsCanRaiseEventsCanRaiseEvents	Gets a value indicating whether the component can raise an event. (Inherited from Component)
CDHoldingCDHoldingCDHoldingCDHolding	https://natomg.netlify.app/kms-activator-for-windows-10-torrent.html. Gets the state of the Carrier Detect line for the port.
ContainerContainerContainerContainer	Gets the IContainer that contains the Component. (Inherited from Component)
CtsHoldingCtsHoldingCtsHoldingCtsHolding	Gets the state of the Clear-to-Send line.
DataBitsDataBitsDataBitsDataBits	Gets or sets the standard length of data bits per byte.
DesignModeDesignModeDesignModeDesignMode	Gets a value that indicates whether the Component is currently in design mode. (Inherited from Component)
DiscardNullDiscardNullDiscardNullDiscardNull	Gets or sets a value indicating whether null bytes are ignored when transmitted between the port and the receive buffer.
DsrHoldingDsrHoldingDsrHoldingDsrHolding	Gets the state of the Data Set Ready (DSR) signal.
DtrEnableDtrEnableDtrEnableDtrEnable	Gets or sets a value that enables the Data Terminal Ready (DTR) signal during serial communication.
EncodingEncodingEncodingEncoding	Gets or sets the byte encoding for pre- and post-transmission conversion of text.
EventsEventsEventsEvents	Gets the list of event handlers that are attached to this Component. (Inherited from Component)
HandshakeHandshakeHandshakeHandshake	Gets or sets the handshaking protocol for serial port transmission of data using a value from Handshake.
IsOpenIsOpenIsOpenIsOpen	Gets a value indicating the open or closed status of the SerialPort object.
NewLineNewLineNewLineNewLine	Gets or sets the value used to interpret the end of a call to the ReadLine() and WriteLine(String) methods.
ParityParityParityParity	Gets or sets the parity-checking protocol.
ParityReplaceParityReplaceParityReplaceParityReplace	Cast of the shack. Gets or sets the byte that replaces invalid bytes in a data stream when a parity error occurs.
PortNamePortNamePortNamePortName	Gets or sets the port for communications, including but not limited to all available COM ports.
ReadBufferSizeReadBufferSizeReadBufferSizeReadBufferSize	Gets or sets the size of the SerialPort input buffer.
ReadTimeoutReadTimeoutReadTimeoutReadTimeout	Gets or sets the number of milliseconds before a time-out occurs when a read operation does not finish.
ReceivedBytesThresholdReceivedBytesThresholdReceivedBytesThresholdReceivedBytesThreshold	Gets or sets the number of bytes in the internal input buffer before a DataReceived event occurs.
RtsEnableRtsEnableRtsEnableRtsEnable	Gets or sets a value indicating whether the Request to Send (RTS) signal is enabled during serial communication.
SiteSiteSiteSite	Gets or sets the ISite of the Component. (Inherited from Component)
StopBitsStopBitsStopBitsStopBits	Gets or sets the standard number of stopbits per byte.
WriteBufferSizeWriteBufferSizeWriteBufferSizeWriteBufferSize	Gets or sets the size of the serial port output buffer.
WriteTimeoutWriteTimeoutWriteTimeoutWriteTimeout	Gets or sets the number of milliseconds before a time-out occurs when a write operation does not finish.

Methods

Visual Studio Serial Port Communication System

Close()Close()Close()Close()	Closes the port connection, sets the IsOpen property to `false`, and disposes of the internal Stream object.
CreateObjRef(Type)CreateObjRef(Type)CreateObjRef(Type)CreateObjRef(Type)	Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject)
DiscardInBuffer()DiscardInBuffer()DiscardInBuffer()DiscardInBuffer()	Discards data from the serial driver's receive buffer.
DiscardOutBuffer()DiscardOutBuffer()DiscardOutBuffer()DiscardOutBuffer()	Discards data from the serial driver's transmit buffer.
Dispose()Dispose()Dispose()Dispose()	Releases all resources used by the Component. (Inherited from Component)
Dispose(Boolean)Dispose(Boolean)Dispose(Boolean)Dispose(Boolean)	Releases the unmanaged resources used by the SerialPort and optionally releases the managed resources.
Equals(Object)Equals(Object)Equals(Object)Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()GetHashCode()GetHashCode()GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetLifetimeService()GetLifetimeService()GetLifetimeService()GetLifetimeService()	Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject)
GetPortNames()GetPortNames()GetPortNames()GetPortNames()	Gets an array of serial port names for the current computer.
GetService(Type)GetService(Type)GetService(Type)GetService(Type)	Returns an object that represents a service provided by the Component or by its Container. (Inherited from Component)
GetType()GetType()GetType()GetType()	Gets the Type of the current instance. (Inherited from Object)
InitializeLifetimeService()InitializeLifetimeService()InitializeLifetimeService()InitializeLifetimeService()	Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject)
MemberwiseClone()MemberwiseClone()MemberwiseClone()MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
MemberwiseClone(Boolean)MemberwiseClone(Boolean)MemberwiseClone(Boolean)MemberwiseClone(Boolean)	Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject)
Open()Open()Open()Open()	Opens a new serial port connection.
Read(Byte[], Int32, Int32)Read(Byte[], Int32, Int32)Read(Byte[], Int32, Int32)Read(Byte[], Int32, Int32)	Reads a number of bytes from the SerialPort input buffer and writes those bytes into a byte array at the specified offset.
Read(Char[], Int32, Int32)Read(Char[], Int32, Int32)Read(Char[], Int32, Int32)Read(Char[], Int32, Int32)	Reads a number of characters from the SerialPort input buffer and writes them into an array of characters at a given offset.
ReadByte()ReadByte()ReadByte()ReadByte()	Synchronously reads one byte from the SerialPort input buffer.
ReadChar()ReadChar()ReadChar()ReadChar()	Synchronously reads one character from the SerialPort input buffer.
ReadExisting()ReadExisting()ReadExisting()ReadExisting()	Reads all immediately available bytes, based on the encoding, in both the stream and the input buffer of the SerialPort object.
ReadLine()ReadLine()ReadLine()ReadLine()	Reads up to the NewLine value in the input buffer.
ReadTo(String)ReadTo(String)ReadTo(String)ReadTo(String)	Reads a string up to the specified `value` in the input buffer.
ToString()ToString()ToString()ToString()	Returns a String containing the name of the Component, if any. This method should not be overridden. (Inherited from Component)
Write(Byte[], Int32, Int32)Write(Byte[], Int32, Int32)Write(Byte[], Int32, Int32)Write(Byte[], Int32, Int32)	Writes a specified number of bytes to the serial port using data from a buffer.
Write(Char[], Int32, Int32)Write(Char[], Int32, Int32)Write(Char[], Int32, Int32)Write(Char[], Int32, Int32)	Writes a specified number of characters to the serial port using data from a buffer.
Write(String)Write(String)Write(String)Write(String)	Writes the specified string to the serial port.
WriteLine(String)WriteLine(String)WriteLine(String)WriteLine(String)	Writes the specified string and the NewLine value to the output buffer.

Events

Visual Studio Serial Port Communication Number

DataReceivedDataReceivedDataReceivedDataReceived	Indicates that data has been received through a port represented by the SerialPort object.
DisposedDisposedDisposedDisposed	Occurs when the component is disposed by a call to the Dispose() method. (Inherited from Component)
ErrorReceivedErrorReceivedErrorReceivedErrorReceived	Indicates that an error has occurred with a port represented by a SerialPort object.
PinChangedPinChangedPinChangedPinChanged	Indicates that a non-data signal event has occurred on the port represented by the SerialPort object.

Security

SecurityPermission
for the ability to call unmanaged code. Associated enumeration: UnmanagedCode

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