need help to undestand action listener - Programmers Heaven

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Categories

need help to undestand action listener

tonynhaddadtonynhaddad Posts: 2Member
i need help to undestand action listener
how can i understand it well
can anybody help me

Comments

  • locoloco Posts: 173Member
    : i need help to undestand action listener
    : how can i understand it well
    : can anybody help me
    :
    :

    Hi

    I dont know what you mean by action listener. But if you are talking about events, here is my understanding of events:

    -> An event handler is an interrupt routine

    An example is of it is the serialPort interrupt:

    [blue]
    serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);



    void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
    {
    MessageBox.Show("Serial port interrupt routine");
    }
    [/blue]


    So in this case if there is data on the serial port, the program would automatically stop what it was doing and it will go to the function serialPort1_DataReceived(), and it will display the messagebox saying "Serial port interrupt routine". After completing the routine, the program would then automatically continue where it left off when the interrupt occured.


    loco
Sign In or Register to comment.