Understanding OnPreRender and how to use it

[Tarun Mistry]

Hi everyone.

I have a usercontol that changes one of the ViewState variables, it does
this when a button within it is pressed.

I would like to alter the appearance of the page based on this view state
variable, however i am told that the page has already been rendered at this
point, what do i need todo to make my page "rerender" with the new viewstate
information?

Im really unsure what to express in the main page object to accomplish this,
will my user control have to raise an event or something (again stuck, i
need to figure this out! :))

Alternatively, does anyone have a work around for this?

Thanks for all your help everyone.
Taz

[Newbie]

If you want to change the appearance of the page, you need to do so at the
latest in the pages pre-render event. Organise things this way and you will
be ok.

"Tarun Mistry" <no****@nospam. com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..

Hi everyone.

I have a usercontol that changes one of the ViewState variables, it does
this when a button within it is pressed.

I would like to alter the appearance of the page based on this view state
variable, however i am told that the page has already been rendered at
this point, what do i need todo to make my page "rerender" with the new
viewstate information?

Im really unsure what to express in the main page object to accomplish
this, will my user control have to raise an event or something (again
stuck, i need to figure this out! :))

Alternatively, does anyone have a work around for this?

Thanks for all your help everyone.
Taz

[Kevin Spencer]

Hi Taz,

I would be careful about believing anything "i am told." Even well-meaning
people can be wrong. When I am told something, even by someone I know, I put
the information into my "data for verification" memory area, and make a note
to research it. Here's a good reference for you. It tells you everything
that happens during the Page's execution (and any other ASP.Net Control's
execution), and when:

http://msdn.microsoft.com/library/de...nLifecycle.asp

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
We got a sick zebra a hat,
you ultimate tuna.
"Tarun Mistry" <no****@nospam. com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..

Hi everyone.

I have a usercontol that changes one of the ViewState variables, it does
this when a button within it is pressed.

I would like to alter the appearance of the page based on this view state
variable, however i am told that the page has already been rendered at
this point, what do i need todo to make my page "rerender" with the new
viewstate information?

Im really unsure what to express in the main page object to accomplish
this, will my user control have to raise an event or something (again
stuck, i need to figure this out! :))

Alternatively, does anyone have a work around for this?

Thanks for all your help everyone.
Taz

[Tarun Mistry]

Hi all, many thanks for your replies.

I have indeed got it working following your rendering advice. it seems
trying to save and then load data into the viewstate in one go doesnt work!

Thanks again!

With kind regards,
Taz