Dynamically created webcontrol's events not firing

[Mark Rae]

Hi,

I'm sure I've done this before, but I can't get it to work today...

I'm trying to add a DropDownList into a TableCell and wire up its
SelectedIndexCh anged event. I'm adding the dynamic control like this:

mtblCell = new TableCell();
mtblCell.Column Span = 2;
DropDownList cmbShipping = new DropDownList();
cmbShipping.Ite ms.Add(new ListItem("", "0"));
cmbShipping.Ite ms.Add(new ListItem("Unite d Kingdom", "1"));
cmbShipping.Ite ms.Add(new ListItem("Europ ean Union", "2"));
cmbShipping.Ite ms.Add(new ListItem("Rest of world", "3"));
cmbShipping.Aut oPostBack = true;
cmbShipping.Sel ectedIndexChang ed += new
EventHandler(cm bShipping_Selec tedIndexChanged );
mtblCell.Contro ls.Add(cmbShipp ing);
mtblRow.Cells.A dd(mtblCell);
I've already created the code for the event:

private void cmbShipping_Sel ectedIndexChang ed(object sender, EventArgs e)
{
BindData();
}
It all seems to work well enough inasmuch as the DropDownList certainly does
get created in the TableCell - the resulting HTML looks like this:

<td colspan="2">
<select name="_ctl0" onchange="__doP ostBack('_ctl0' ,'')"
language="javas cript">
<option value="0"></option>
<option value="1">Unite d Kingdom</option>
<option value="2">Europ ean Union</option>
<option value="3">Rest of world</option>
</select>
</td>
When I change the selected index of the DropDownList, it does the postback
as expected. However, the cmbShipping_Sel ectedIndexChang ed event doesn't
fire. I must be missing something totally obvious.

Any assistance gratefully received.

Mark

[hashimisayed]

Hi,

For these events to get wired up properly, for a DropDownList, you need
to add the controls in the OnInit() method of the page. If you add
these controls only for certain rows, I would add them but make them
invisible until you decide they need to be shown.

Thanks,

Sayed Y. Hashimi

http://www.sayedhashimi.com
Shameless Book Plug: Service-Oriented Smart Clients with .NET 2.0
http://www.amazon.com/exec/obidos/tg...glance&s=books

[Mark Rae]

<ha**********@g mail.com> wrote in message
news:11******** **************@ o13g2000cwo.goo glegroups.com.. .

For these events to get wired up properly, for a DropDownList, you need
to add the controls in the OnInit() method of the page. If you add
these controls only for certain rows, I would add them but make them
invisible until you decide they need to be shown.

Sorry, I failed to mention that I'd already tried that... No matter, I found
another way to do it - thanks for the reply.

[jim]

What was the solution you found? Please share

"Mark Rae" wrote:

<ha**********@g mail.com> wrote in message
news:11******** **************@ o13g2000cwo.goo glegroups.com.. .

For these events to get wired up properly, for a DropDownList, you need
to add the controls in the OnInit() method of the page. If you add
these controls only for certain rows, I would add them but make them
invisible until you decide they need to be shown.

Sorry, I failed to mention that I'd already tried that... No matter, I found
another way to do it - thanks for the reply.