Third argument for EventHandler

[Elliot]

How can I pass the value of variable text to t except declare text at class
level?

..........
string text = "text";
Timer a = new Timer();
a.Interval = 10000;
a.Start();
a.Tick += new EventHandler(t) ;
..........

private void t(object sender, EventArgs eArgs)
{
}

[Nicholas Paldino [.NET/C# MVP]]

Re: Third argument for EventHandler

Elliot,

Well, the way you have it, you can't, as the EventHandler delegate only
takes two parameters.

However, you can make the value text available to t by setting a field
in the class that t is on, and then use it that way.

Or, you can use an anonymous method and change t like so:

private void t(object sender, EventArgs eArgs, string text)
{

}

string text = "text";
Timer a = new Timer();
a.Interval = 10000;
a.Start();
a.Tick += delegate(object sender, EventArgs e) { t(sender, e, text); };

If you are using C# 3.0, you can use a lambda expression as well to make
this code even smaller.


--
- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard. caspershouse.co m

"Elliot" <elliot_barclay @hotmail.co.ukw rote in message
news:390567A9-2E16-4670-BDDB-5FB759154AEB@mi crosoft.com...

How can I pass the value of variable text to t except declare text at
class level?
>
..........
string text = "text";
Timer a = new Timer();
a.Interval = 10000;
a.Start();
a.Tick += new EventHandler(t) ;
..........
>
private void t(object sender, EventArgs eArgs)
{
}

[Marc Gravell]

Re: Third argument for EventHandler

Since you are *handling* an event, you can't use a custom
handler/event-args, but you might be able to do what you want via an
anonymous method:

a.Tick += delegate { SomeMethod(text );}

SomeMethod(stri ng value) {
//...
}

Marc

[Elliot]

Re: Third argument for EventHandler

Works, thank you.


"Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c omwrote in
message news:uubWuB52IH A.4536@TK2MSFTN GP06.phx.gbl...

Elliot,
>
Well, the way you have it, you can't, as the EventHandler delegate only
takes two parameters.
>
However, you can make the value text available to t by setting a field
in the class that t is on, and then use it that way.
>
Or, you can use an anonymous method and change t like so:
>
private void t(object sender, EventArgs eArgs, string text)
{
>
}
>
string text = "text";
Timer a = new Timer();
a.Interval = 10000;
a.Start();
a.Tick += delegate(object sender, EventArgs e) { t(sender, e, text); };
>
If you are using C# 3.0, you can use a lambda expression as well to
make this code even smaller.
>
>
--
- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard. caspershouse.co m
>
"Elliot" <elliot_barclay @hotmail.co.ukw rote in message
news:390567A9-2E16-4670-BDDB-5FB759154AEB@mi crosoft.com...

>How can I pass the value of variable text to t except declare text at
>class level?
>>
> ..........
> string text = "text";
> Timer a = new Timer();
> a.Interval = 10000;
> a.Start();
> a.Tick += new EventHandler(t) ;
> ..........
>>
> private void t(object sender, EventArgs eArgs)
> {
> }

>
>

[Elliot]

Re: Third argument for EventHandler

Thank you too.


"Marc Gravell" <marc.gravell@g mail.comwrote in message
news:uVWVEF52IH A.2524@TK2MSFTN GP04.phx.gbl...

Since you are *handling* an event, you can't use a custom
handler/event-args, but you might be able to do what you want via an
anonymous method:
>
a.Tick += delegate { SomeMethod(text );}
>
SomeMethod(stri ng value) {
//...
}
>
Marc