Using the EventArgs

Question

what is the java equivalent method "getSource()" in C# language

public void actionPerformed(ActionEvent e) 
{ 
   if(e.getSource().equals(button1)){
      //some code here
     }
}

See http://stackoverflow.com/a/1303176/558486 – Rui Jarimba Feb 03 '13 at 14:56 — Rui Jarimba, Feb 03 '13 at 14:56

score 7 · Answer 1 · answered Feb 03 '13 at 14:53

7

There is not GetSource in C#. This is why, the UI events are usually using the signature (object sender, EventArgs eventArgs). The source is defined by the parameter sender.

answered Feb 03 '13 at 14:53

Cédric Bignon

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Parimal Raj · Answer 2 · 2013-02-03T15:03:31.217

0

In .NET [C#/Vb.net]

The general signature of a EventHandler (delegate) is :

  public delegate void EventHandler(
      Object sender,
      EventArgs e
  )

Where : sender represents the : The source of the event.

So, Java Equivalent will be :

private void button1_Click(object sender, EventArgs e)
{
    if (Object.ReferenceEquals(sender, button1))
    {
        //wohoo!!! its the same object
    }
}

edited Feb 03 '13 at 15:03

answered Feb 03 '13 at 14:57

Parimal Raj

20,189
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Thank you. How am i going to express that using the switch statement I want something like this: public void actionPerformed(ActionEvent e){ switch(e.getSource()){ case button1: // some code break; } } – Ted Mad Feb 03 '13 at 15:08
well .net will disappoint you a little, there is a limitation on switch case statement, you have to go with if else - if else logic! – Parimal Raj Feb 03 '13 at 15:16
http://stackoverflow.com/questions/44905/c-sharp-switch-statement-limitations-why - check this for more details! – Parimal Raj Feb 03 '13 at 15:17

score 0 · Answer 3 · answered Feb 03 '13 at 15:08

0

In .net handler is defined as follows

protected void btnname_event(
      Object sender,
      EventArgs e
  )
{
//handler details
}

sender will be equaivalent of getsource()

answered Feb 03 '13 at 15:08

user2031802

744
8
7

Using the EventArgs

3 Answers3