Referencing a control in Javascript

[John]

Hi all,

In my code-behind, I validate some controls and if a particular control has
a problem, I not only send an alert down to the client via
Page.RegisterStartupScript but I'd like to set the focus of the control. now
the control in question is embedded into a user control which is, in turn,
embedded into a user control which, in turn, is embedded onto a web form.

The Javascript does not work if I when I refernce the control with it's ID.
I checked the client source and saw it was renamed to
'_ctl2_UCIngDetail_lstUnits2'. Now when I changed the Javascript to
'document.frmMain._ctl2_UCIngDetail_lstUnits2.focu s();', this worked. but
isn't this going to break if controls are added to the usercontrol?

What is the correct way to solve this dilemma?

Regards
John.

[PJ Lee]

You will need to use the "ClientID" property of the control to reference it
properly.


"John" <a@b.com> wrote in message
news:#U#wyG2QDHA.2592@TK2MSFTNGP10.phx.gbl...

> Hi all,
>
> In my code-behind, I validate some controls and if a particular control

has

> a problem, I not only send an alert down to the client via
> Page.RegisterStartupScript but I'd like to set the focus of the control.

now

> the control in question is embedded into a user control which is, in turn,
> embedded into a user control which, in turn, is embedded onto a web form.
>
> The Javascript does not work if I when I refernce the control with it's

ID.

> I checked the client source and saw it was renamed to
> '_ctl2_UCIngDetail_lstUnits2'. Now when I changed the Javascript to
> 'document.frmMain._ctl2_UCIngDetail_lstUnits2.focu s();', this worked. but
> isn't this going to break if controls are added to the usercontrol?
>
> What is the correct way to solve this dilemma?
>
> Regards
> John.
>
>

[David Waz...]

js ="<script ...>" & txtBox.ClientID & ".focus();</scirpt>"


"John" <a@b.com> wrote in message
news:#U#wyG2QDHA.2592@TK2MSFTNGP10.phx.gbl...

> Hi all,
>
> In my code-behind, I validate some controls and if a particular control

has

> a problem, I not only send an alert down to the client via
> Page.RegisterStartupScript but I'd like to set the focus of the control.

now

> the control in question is embedded into a user control which is, in turn,
> embedded into a user control which, in turn, is embedded onto a web form.
>
> The Javascript does not work if I when I refernce the control with it's

ID.

> I checked the client source and saw it was renamed to
> '_ctl2_UCIngDetail_lstUnits2'. Now when I changed the Javascript to
> 'document.frmMain._ctl2_UCIngDetail_lstUnits2.focu s();', this worked. but
> isn't this going to break if controls are added to the usercontrol?
>
> What is the correct way to solve this dilemma?
>
> Regards
> John.
>
>