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From: Jackie on 30 May 2010 12:05
Do you mean something like this?
-----
MyEvent = new MyEventHandler(
(sender_, e_) =>
{
throw new NotImplementedException();
});
MyEvent.Invoke(this, EventArgs.Empty);
-----
From: Jackie on 30 May 2010 12:06
Or just...
-----
if (MyEvent != null)
{
MyEvent.Invoke(this, EventArgs.Empty);
}
-----
From: Tony Johansson on 30 May 2010 12:46
"Arne Vajh�j" <arne(a)vajhoej.dk> skrev i meddelandet
news:4c0285f8$0$286$14726298(a)news.sunsite.dk...
> On 30-05-2010 11:09, Tony Johansson wrote:
>> "Arne Vajh�j"<arne(a)vajhoej.dk> skrev i meddelandet
>> news:4c027933$0$274$14726298(a)news.sunsite.dk...
>>> On 30-05-2010 10:31, Tony Johansson wrote:
>>>> Here is some code. But the code marked with * below how would that
>>>> //Create a delegete
>>>> public delegete void MyEventHandler(object sender, EventArgs e);
>>>>
>>>> //Create an event member
>>>> public event MyEventHandler MyEvent;
>>>>
>>>> //Invoke the delegete within a method when you need to raise the event,
>>>> as
>>>> the following code demonstrates
>>>>
>>>> if(MyEvent != null)
>>>> MyEvent((this, EventArgs.Empty)
>>>>
>>>> EventArgs e = new EventArgs();
>>>>
>>>> if (handler != null)
>>>> handler(this, e);
>>>
>>> I do not see the * !?!?
>>
>> Sorry
>>
>> I mean these lines.
>> if (handler != null)
>> handler(this, e);
>
> Should handler be MyEvent or ?
>
> Arne
>

In the book I read it says the following.
How to raise an event.
1. Create a delegete
public delegate void MyEventHandler
2.Create an event member
public event MyEventHandler MyEvent
3.Invoke the delegete within a method when you need to raise the event, as
the following code demonstrates
if (MyEvent != null)
MyEvent(this, EventArgs.Empty);

EventArgs e = new EventArgs();

if (handler != null)
{
//invoke the delegete
handler(this != null);
}

I understand everything except the following
if (handler != null)
{
//invoke the delegete
handler(this != null);
}

I don't understand what the book wants to says when they already has this
text
if (MyEvent != null)
MyEvent(this, EventArgs.Empty);

Do they want to says that the event can be called handler instead of MyEvent
?

//Tony


From: Willem van Rumpt on 30 May 2010 13:34
On 30-5-2010 18:05, Jackie wrote:
> Do you mean something like this?
> -----
> MyEvent = new MyEventHandler(
> (sender_, e_) =>
> {
> throw new NotImplementedException();
> });
> MyEvent.Invoke(this, EventArgs.Empty);
> -----

Tell Tony ;)

--
Willem van Rumpt
From: Jackie on 30 May 2010 13:39
On 5/30/2010 19:34, Willem van Rumpt wrote:
> On 30-5-2010 18:05, Jackie wrote:
>> Do you mean something like this?
>> -----
>> MyEvent = new MyEventHandler(
>> (sender_, e_) =>
>> {
>> throw new NotImplementedException();
>> });
>> MyEvent.Invoke(this, EventArgs.Empty);
>> -----
>
> Tell Tony ;)
>

Oh yeah, seems like I replied to you instead.
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