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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
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