Command button won't cause postback

25 Feb 2006 4:05 PM

JAdrianB

I've created a user control (C#) and added it to a web form. The user
control has a command button. When the button is clicked, nothing happens.
I thought maybe something went wrong with the control, so I recreated it from
scratch. Same problem. If I replace the command button with a link button,
it will submit the form, but none of the user's changes to controls are
available. For example, if a user selects an option in a RadioButtonList,
the SelectedItem is still null. My project is made up of 20-30 user
controls, and this is the only case where I'm having this problem. It's one
of the strangest things I've seen lately. Any ideas? Thanks!

25 Feb 2006 7:29 PM

Phillip Williams

1- How do you add the control to your page? During which event of the page?
2- How did you handle the Command event of the Button?

--
HTH,
Phillip Williams
http://www.societopia.net
http://www.webswapp.com

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"JAdrianB" wrote:

> I've created a user control (C#) and added it to a web form. The user
> control has a command button. When the button is clicked, nothing happens.
> I thought maybe something went wrong with the control, so I recreated it from
> scratch. Same problem. If I replace the command button with a link button,
> it will submit the form, but none of the user's changes to controls are
> available. For example, if a user selects an option in a RadioButtonList,
> the SelectedItem is still null. My project is made up of 20-30 user
> controls, and this is the only case where I'm having this problem. It's one
> of the strangest things I've seen lately. Any ideas? Thanks!
>

25 Feb 2006 7:39 PM

JAdrianB

Just drag-and-drop the button onto the User Control, then double-click the
button to enter code for the code-behind click event (as I've done thousands
of times before). Then, drag-and-drop the UserControl onto the ASPX page.
When the button is clicked, nothing happens, so it doesn't even try to
execute any event at all on the server, or post the form.

I'm generally adding UserControls to the ASPX page dynamically at runtime
from the PageLoad event of the ASPX page. But whether I do it dynamically,
or as described above, the behavior is identical.

It may be related to the containing ASPX page. I dropped the control on a
different web form and it seemed to work okay. It's very odd. Then I
dropped a button control directly on the containing ASPX page, and it also
didn't work.

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"Phillip Williams" wrote:

> 1- How do you add the control to your page? During which event of the page?
> 2- How did you handle the Command event of the Button?
> --

25 Feb 2006 9:04 PM

JAdrianB

Ok, this is getting more odd as I go. After playing with the page, here's
something I discovered... There are two controls embedded in a table. One
is a placeholder that I dynamically add controls to at runtime. The next is
the user control I'm having problems with.

If I put the Placeholder first, like below, the second control does not work
properly:
<asp:PlaceHolder ID="column1" Runat="server"></asp:PlaceHolder><br>
<uc1:Poll id="Poll1" runat="server"></uc1:Poll>

However, if I list the user control BEFORE the placeholder, it DOES work
properly:
<uc1:Poll id="Poll1" runat="server"></uc1:Poll>
<asp:PlaceHolder ID="column1" Runat="server"></asp:PlaceHolder><br>

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"Phillip Williams" wrote:

> 1- How do you add the control to your page? During which event of the page?
> 2- How did you handle the Command event of the Button?
> --
> HTH,
> Phillip Williams
> http://www.societopia.net
> http://www.webswapp.com
>
>
> "JAdrianB" wrote:
>
> > I've created a user control (C#) and added it to a web form. The user
> > control has a command button. When the button is clicked, nothing happens.
> > I thought maybe something went wrong with the control, so I recreated it from
> > scratch. Same problem. If I replace the command button with a link button,
> > it will submit the form, but none of the user's changes to controls are
> > available. For example, if a user selects an option in a RadioButtonList,
> > the SelectedItem is still null. My project is made up of 20-30 user
> > controls, and this is the only case where I'm having this problem. It's one
> > of the strangest things I've seen lately. Any ideas? Thanks!
> >