Re: How to handle Dynamic Controls within User Controls

From: Michael Ramey (raterus_at_localhost)
Date: 02/04/04 

Date: Wed, 4 Feb 2004 13:46:24 -0500

Worked great, just one thing, the button i'm writing the event for is a
"delete" button, so on a postback, I wouldn't want it to appear again. I
suppose I can search and delete the control before it is rendered again.
Thanks for the info, it did help.

"Felbrigg" <someone@microsoft.com> wrote in message
news:OdIg%23J06DHA.3860@tk2msftngp13.phx.gbl...
> I've done a similar thing myself, emphasis on SIMILAR.
> I fix my similar problem I had to reload all of the dynamic controls on
each
> postback, the viewstate info then allowed the events to take place.
>
> Hope that helps
>
>
> "Michael Ramey" <raterus@localhost> wrote in message
> news:OxMpiKz6DHA.2576@TK2MSFTNGP11.phx.gbl...
> > Howdy, I think I have a good question!
> >
> > I'm creating a usercontrol, and within this usercontrol, I'm dynamically
> > creating controls (imagebuttons to be exact), that the user can click on
> > which will cause a postback to occur.
> >
> > My problem is, I can't seem to be able to get the handlers to work
within
> > the user control, to determine which control has been clicked, and what
to
> > do with it from there.
> >
> > I want these events to be handled within the user control itself, and
not
> > the page that has the user control.
> >
> > Here is what I've been doing:
> >
> > 'I'm adding this imagebutton to a tablecell I'm dynamically creating as
> > well, for simplicity i'm not showing that this code is part of a for
each
> > loop, and it can be ran many times...
> >
> > Dim dImage as ImageButton = new ImageButton
> >
> > AddHandler dImage.click, AddressOf DeleteButton_Click
> > dImage.imageurl = "../images/delete.gif"
> > dImage.tooltip = "Delete this Item"
> > tblcellDelete.Controls.Add(dImage) 'tcDelete is a TableCell
> > tblRow.Controls.Add(tcDelete) 'trow is a TableRow
> > tblShow.Controls.Add(trow) 'tblShow is a Table
> >
> > Then I create the event handler in the user control
> >
> > Sub DeleteButton_Click(ByVal sender As Object, ByVal e As
> > System.Web.UI.ImageClickEventArgs)
> > Response.Write("clicked an image?")
> > End Sub
> >
> > For now I'm just using Response.write with a breakpoint on that line to
> see
> > if that code executes. Unfortunately the DeleteButton_Click Sub is
never
> > called, the page just posts back. Can someone tell me the proper way to
> > handle events for dynamically created controls within user controls?
> >
> > Thanks!
> > --Michael
> >
> >
>
>