A serial port; a thread; a delegate; an event.

1, the construction method, need to use the interface to display the data received by the serial port, so I used, more complex delegate event thread method, the serial port received modules into my main project;

Summarize the design of the serial port module,

Create a new delegate

public delegate void Serialporteventhandler(Object sender, Serialporteventargs e);

Create a new event Serialporteventargs class that inherits from the base class of the event data class

public class Serialporteventargs : EventArgs
{
public bool Isopend = FALSE;
Public byte[] receivedbytes = null;
}

Create a new Commodel class

Declaring an event in a class

Public event Serialporteventhandler comreceivedataevent = null;
Public event Serialporteventhandler comopenevent = null;
Public event Serialporteventhandler comcloseevent = null;

　　　　

Private SerialPort sp = new SerialPort ();

Private Object Thislock = new Object ();

In the event of a serial control, there are 3 events

When the serial port receives the data, triggers the datareceived event, and clicks the resulting method to add the code function:

1. If Sp. Bytestoread <= 0, return.

2. Lock thread Lock (thislock)

3. Read the data:　　

1                 int len = sp. Bytestoread; 2                 Data New Byte[len]; 3                 Try 4                 {5                     sp. Read (data0, len); 6                 }                

4.new out of its own defined event Serialporteventargs

Serialporteventargs args = new Serialporteventargs();

Data transferred in the event

　　　　　args. receivedbytes = data;

5. If the event is comreceivedataevent and not empty, use the event ... ()

if (comreceivedataevent ! = null)
{
Comreceivedataevent.invoke (this, args);
}

Using the event notification interface

At the interface layer

Declare an interface IView and refer to this interface in MainForm "publicpartial class Formmain:form,iview"

public interface IView
{

void comreceivedataevent(Object sender, Serialporteventargs e);

}

Write serial receive event function

public void comreceivedataevent(object sender, Serialporteventargs e)
{

          //          //Summary://gets a value that indicates whether the caller must call the Invoke method when making a method call to the control, because the call is in a thread other than the one on which the control is created. //          //return Result://if the control's System.Windows.Forms.Control.Handle is created on a different thread than the calling thread (indicating that you must call the control through the Invoke method);//true, otherwise false.             if( This. invokerequired) {Try                { //                  //Summary://executes the specified delegate with the specified argument list on the thread that owns the control's underlying window handle. //                  //Parameters://Method://a method delegate that takes the same number and type of arguments as is contained in the args parameter. //                  //args://An array of objects passed as arguments to the specified method.                  If this method has no arguments, the parameter can be null. //                  //return Result://A System.Object that contains the return value of the delegate being called, or null if the delegate does not have a return value. Invoke (NewAction<object, serialporteventargs>(comreceivedataevent), sender, E); }                Catch(System.Exception) {//Disable form Destroy exception                }                return; }            if(true)//string Display As String{receivetbx.                AppendText (Encoding.Default.GetString (e.receivedbytes)); Receivebytescount+=e.receivedbytes.length; Acceptstatuslabel.text="Received:"+receivebytescount.tostring (); }

}

A serial port; a thread; a delegate; an event.