Serial Port Complete - Latest Microcontroller projects

Managing Ports and Transfers in .NET

The code to use the PinChanged event is similar to the code for the DataRe-

ceived event earlier in this chapter. The application assigns a routine to execute

when a PinChanged event occurs on an open port:

 ' Define a delegate class to handle PinChanged events.

Friend Delegate Sub SerialPinChangedEventHandlerDelegate _

(ByVal sender As Object, ByVal e As SerialPinChangedEventArgs)

' Create an instance of the delegate.

Private SerialPinChangedEventHandler1 _

As New SerialPinChangedEventHandler(AddressOf PinChanged)

 // Define a delegate class to handle PinChanged events.

internal delegate void SerialPinChangedEventHandlerDelegate

(object sender, SerialPinChangedEventArgs e);

// Create an instance of the delegate.

private SerialPinChangedEventHandler SerialPinChangedEventHandler1;

SerialPinChangedEventHandler1 = new SerialPinChangedEventHandler(PinChanged);

The application assigns the delegate as the handler routine that will execute

when a PinChanged event occurs on an open COM port:

 AddHandler myComPort.PinChanged, SerialPinChangedEventHandler1

 myComPort.PinChanged += SerialPinChangedEventHandler1;