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I'm adding WebControl objects to a Page dynamically on Page_Load, but I'm
having trouble attaching events to these. For example, adding an image
button :-

ImageButton nb = new ImageButton();
nb.ImageUrl = "text.gif";
nb.ToolTip = "Edit Text";
nb.Click += new ImageClickEventHandler(b1_Click);
myPlaceholder.Controls.Add(nb);

(myPlaceholder is a Placeholder object added to the Page at design time)

private void b1_Click(object sender, ImageClickEventArgs e)
{
// etc
}

Problem is, on clicking the button the event is not fired at all - it just
forces a postback - what am I doing wrong ?

The Server Side Event Handling happens before the page_load event and after the On_init ... add your controls and event handler hookups in the On_Init Event and you should be able to get the events to fire.

Joe

"JezB" wrote:

> I'm adding WebControl objects to a Page dynamically on Page_Load, but I'm
> having trouble attaching events to these. For example, adding an image
> button :-
>
> ImageButton nb = new ImageButton();
> nb.ImageUrl = "text.gif";
> nb.ToolTip = "Edit Text";
> nb.Click += new ImageClickEventHandler(b1_Click);
> myPlaceholder.Controls.Add(nb);
>
> (myPlaceholder is a Placeholder object added to the Page at design time)
>
> private void b1_Click(object sender, ImageClickEventArgs e)
> {
> // etc
> }
>
> Problem is, on clicking the button the event is not fired at all - it just
> forces a postback - what am I doing wrong ?
>
>
>
>

This is OF COURSE NOT true. All events happen AFTER Page_Load event. The
thing is, that you developers sometimes don't know how the process happens
in the first place.
All dynamic controls should be restored the same way they were created the
first time. And you have to recreate them BEFORE the events get processed.
So the latest possible time to recreate those is Page_Load.
What JoeDattilo suggested is the way to process ViewState, not events.
Because viewstate gets processed after OnInit and BEFORE PageLoad. If you
don't need that, then forget about it...

--
RobertK
{ Clever? No just smart. }

"Joe.Dattilo" <> wrote in message
news:2066D479-C30C-4C3D-9D18-...
> The Server Side Event Handling happens before the page_load event and
after the On_init ... add your controls and event handler hookups in the
On_Init Event and you should be able to get the events to fire.
>
> Joe
>
> "JezB" wrote:
>
> > I'm adding WebControl objects to a Page dynamically on Page_Load, but
I'm
> > having trouble attaching events to these. For example, adding an image
> > button :-
> >
> > ImageButton nb = new ImageButton();
> > nb.ImageUrl = "text.gif";
> > nb.ToolTip = "Edit Text";
> > nb.Click += new ImageClickEventHandler(b1_Click);
> > myPlaceholder.Controls.Add(nb);
> >
> > (myPlaceholder is a Placeholder object added to the Page at design time)
> >
> > private void b1_Click(object sender, ImageClickEventArgs e)
> > {
> > // etc
> > }
> >
> > Problem is, on clicking the button the event is not fired at all - it
just
> > forces a postback - what am I doing wrong ?
> >
> >
> >
> >