Hello,

I've worked on a website in ASP.NET 2.0 where, on every page, login-
button of a login control is set as the default button. The login-
control is on the masterpage of the website. In the prerender-method
of the masterpage, I have placed the following code:

Login lg = (Login)lgView.FindControl("lgLogin");
if (lg != null)
{
Button btn = (Button)lg.FindControl("LoginButton");
if (btn != null)
Page.Form.DefaultButton = btn.UniqueID;
}

The website is running in a production environment and a couple of
times a day we get the following exception:

The DefaultButton of 'form1' must be the ID of a control of type
IButtonControl

I can't reproduce the exception; it appearce to occure randomly.

Does anyone experienced the same problem or does anyone have a
solution?

Kind regards,
Jelle

You may have to wrap the point where the code is causing an exception and
find a) the page it is happening on and b) the control it thinks it is
setting as default. The answer to those two questions will help you
determine why it is happening.

--
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA
http://gregorybeamer.spaces.live.com

********************************************
Think outside the box!
********************************************
<(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hello,
>
> I've worked on a website in ASP.NET 2.0 where, on every page, login-
> button of a login control is set as the default button. The login-
> control is on the masterpage of the website. In the prerender-method
> of the masterpage, I have placed the following code:
>
> Login lg = (Login)lgView.FindControl("lgLogin");
> if (lg != null)
> {
> Button btn = (Button)lg.FindControl("LoginButton");
> if (btn != null)
> Page.Form.DefaultButton = btn.UniqueID;
> }
>
> The website is running in a production environment and a couple of
> times a day we get the following exception:
>
> The DefaultButton of 'form1' must be the ID of a control of type
> IButtonControl
>
> I can't reproduce the exception; it appearce to occure randomly.
>
> Does anyone experienced the same problem or does anyone have a
> solution?
>
> Kind regards,
> Jelle
>

Hi there,

If you have a loo
--
Milosz


"(E-Mail Removed)" wrote:

> Hello,
>
> I've worked on a website in ASP.NET 2.0 where, on every page, login-
> button of a login control is set as the default button. The login-
> control is on the masterpage of the website. In the prerender-method
> of the masterpage, I have placed the following code:
>
> Login lg = (Login)lgView.FindControl("lgLogin");
> if (lg != null)
> {
> Button btn = (Button)lg.FindControl("LoginButton");
> if (btn != null)
> Page.Form.DefaultButton = btn.UniqueID;
> }
>
> The website is running in a production environment and a couple of
> times a day we get the following exception:
>
> The DefaultButton of 'form1' must be the ID of a control of type
> IButtonControl
>
> I can't reproduce the exception; it appearce to occure randomly.
>
> Does anyone experienced the same problem or does anyone have a
> solution?
>
> Kind regards,
> Jelle
>
>

some form has a lgButton thats not a really a Login causing the cast to
blow. change your code to:

Login lg = lgView.FindControl("lgLogin") as Login;
if (lg != null)


-- bruce (sqlwork.com)

(E-Mail Removed) wrote:
> Hello,
>
> I've worked on a website in ASP.NET 2.0 where, on every page, login-
> button of a login control is set as the default button. The login-
> control is on the masterpage of the website. In the prerender-method
> of the masterpage, I have placed the following code:
>
> Login lg = (Login)lgView.FindControl("lgLogin");
> if (lg != null)
> {
> Button btn = (Button)lg.FindControl("LoginButton");
> if (btn != null)
> Page.Form.DefaultButton = btn.UniqueID;
> }
>
> The website is running in a production environment and a couple of
> times a day we get the following exception:
>
> The DefaultButton of 'form1' must be the ID of a control of type
> IButtonControl
>
> I can't reproduce the exception; it appearce to occure randomly.
>
> Does anyone experienced the same problem or does anyone have a
> solution?
>
> Kind regards,
> Jelle
>

"Milosz Skalecki [MCAD]" <(E-Mail Removed)> wrote in message
news:2783E435-A210-4BD5-9C50-(E-Mail Removed)...

> Hi there,
>
> If you have a loo

Very useful, otherwise it can get really unpleasant underneath the desk...
;-)

Sorry guys, i pressed 'post' instead of 'close'
--
Milosz


"Mark Rae" wrote:

> "Milosz Skalecki [MCAD]" <(E-Mail Removed)> wrote in message
> news:2783E435-A210-4BD5-9C50-(E-Mail Removed)...
>
> > Hi there,
> >
> > If you have a loo
>
> Very useful, otherwise it can get really unpleasant underneath the desk...
> ;-)
>
>
>

On Feb 5, 3:26 pm, jelle.huy...@gmail.com wrote:
> Hello,
>
> I've worked on a website in ASP.NET 2.0 where, on every page, login-
> button of a login control is set as the default button. The login-
> control is on the masterpage of the website. In the prerender-method
> of the masterpage, I have placed the following code:
>
> Login lg = (Login)lgView.FindControl("lgLogin");
> if (lg != null)
> {
> Button btn = (Button)lg.FindControl("LoginButton");
> if (btn != null)
> Page.Form.DefaultButton = btn.UniqueID;
> }
>
> The website is running in a production environment and a couple of
> times a day we get the following exception:
>
> The DefaultButton of 'form1' must be the ID of a control of type
> IButtonControl
>
> I can't reproduce the exception; it appearce to occure randomly.
>
> Does anyone experienced the same problem or does anyone have a
> solution?
>
> Kind regards,
> Jelle

It looks like it is an issue with MasterPage

Please check this
http://www.spaanjaars.com/QuickDocId.aspx?QUICKDOC=374