Sometimes _ctl0_btnNew Sometimes _ctl1_btnNew?

[bg]

hello,
in my web project, i used placeholder and dynamically I place ascx controls
in it.
in ascx file, i want to delete,update,create to DB. Then i used to ASP
buttons to do this.

My problem is, id's of buttons can change. E.g. id of button is btnNew, in
one load - when I look source of html page - the id is _ctl0_btnNew , in
another _ctl1_btnNew.

1. Why this prefixes added to ids?
2. How can i handle button ids truly?

thanks

Numan

[Girish bharadwaj]

Why do you care?

--
Girish Bharadwaj
http://msmvps.com/gbvb

hello,
in my web project, i used placeholder and dynamically I place ascx
controls
in it.
in ascx file, i want to delete,update,create to DB. Then i used to ASP
buttons to do this.
My problem is, id's of buttons can change. E.g. id of button is
btnNew, in one load - when I look source of html page - the id is
_ctl0_btnNew , in another _ctl1_btnNew.

1. Why this prefixes added to ids?
2. How can i handle button ids truly?
thanks

Numan

[bg]

I use some special jscript validation formulas. In these jscript functions,
how can i obtain buttons. I want enable-disable buttons, change text...
Because of changing id's of buttons, i can not handle buttons.

Can You answer my questions before?
Thanks
Numan

"Girish bharadwaj" <gi*****@mvps.org> wrote in message
news:eJ**************@tk2msftngp13.phx.gbl...

Why do you care?

--
Girish Bharadwaj
http://msmvps.com/gbvb

[Chris R. Timmons]

"bg" <bg@hn> wrote in news:e7**************@TK2MSFTNGP15.phx.gbl:

I use some special jscript validation formulas. In these jscript
functions, how can i obtain buttons. I want enable-disable
buttons, change text... Because of changing id's of buttons, i
can not handle buttons.

Numan,

ASP.Net dynamically creates an ID for a control because multiple
instances of that control may exist on a page. For example, let's
say you have a user control (.ascx) with a button on it named
"btnNew". If you have a page (.aspx) with three instances of that
user control on it, ASP.Net will dynamically assign IDs to those
three buttons when it generates the HTML, something like
"_ctrl0_btnNew", "_ctrl1_btnNew", and "_ctrl2_btnNew".

You can get the dynamically generated control name in server-side
code by reading the control's ClientId property.

--
Hope this helps.

Chris.
-------------
C.R. Timmons Consulting, Inc.
http://www.crtimmonsinc.com/

[bg]

it is ok. thanks Chris

"Chris R. Timmons" <crtimmons@X_NOSPAM_Xcrtimmonsinc.com> wrote in message
news:Xn**********************************@207.46.2 48.16...

"bg" <bg@hn> wrote in news:e7**************@TK2MSFTNGP15.phx.gbl:

I use some special jscript validation formulas. In these jscript
functions, how can i obtain buttons. I want enable-disable
buttons, change text... Because of changing id's of buttons, i
can not handle buttons.

Numan,

ASP.Net dynamically creates an ID for a control because multiple
instances of that control may exist on a page. For example, let's
say you have a user control (.ascx) with a button on it named
"btnNew". If you have a page (.aspx) with three instances of that
user control on it, ASP.Net will dynamically assign IDs to those
three buttons when it generates the HTML, something like
"_ctrl0_btnNew", "_ctrl1_btnNew", and "_ctrl2_btnNew".

You can get the dynamically generated control name in server-side
code by reading the control's ClientId property.

--
Hope this helps.

Chris.
-------------
C.R. Timmons Consulting, Inc.
http://www.crtimmonsinc.com/