Hi all,

I was wondering if you can help.  I have the need to find a control on the 
page for which I don't know all of the ID, this is because it is made up 
from several id's forming one new id.  Is there anyway to find this control 
with only part of the information (the part I have will definately be 
unique).

I was hoping that it might be possible to push a regular expression in the 
string part of the Page.FindControl - but I dont think I can.

I've tried iterating through all the controls on the page, but - well - it 
lies!  If I add Page.Controls to the watch it says there's five, if I then 
add .Item(3) - the html form control, and then add .Controls this is full of 
more controls...

Can anyone help me?

Regards

Rob

Rob Meade wrote:

> Hi all,
>
> I was wondering if you can help.  I have the need to find a control
> on the page for which I don't know all of the ID, this is because it
> is made up from several id's forming one new id.  Is there anyway to
> find this control with only part of the information (the part I have
> will definately be unique).
>
> I was hoping that it might be possible to push a regular expression
> in the string part of the Page.FindControl - but I dont think I can.
>
> I've tried iterating through all the controls on the page, but - well
> - it lies!  If I add Page.Controls to the watch it says there's five,
> if I then add .Item(3) - the html form control, and then add
> .Controls this is full of more controls...


You have to make a recursive loop.

I think that's the only solution here.

-- 

Riki

Hi Rob,
FindControl method is always related to current Naming container. So if you 
want to use plain ID as it is defined you will need to have reference to 
control which is naming container for controls you are looking for. 

You can also use whole unique ID from top level naming container (usually 
page) or part of unique ID - but again you have to relate it to proper naming 
container.

If unique ID of your control is built from several IDs it means it is in 
hierarchy of naming containers. Each container will add its id followed by 
separator (usually $) to final id of your control.

Say you have control with uniqueID ctl00$ctl00$ctl00$myLabel. You can find 
this control by calling Page.FindControl("ctl00$ctl00$ctl00$myLabel") or if 
you have reference to control ctl00$ctl00 (named for example myGridRow) you 
can call myGridRow.FindControl("ctl00$myLabel").  

Use tracing to see whole tree of controls including naming containers.

Regards,
Ladislav 

"Rob Meade" wrote:


> Hi all,
> 
> I was wondering if you can help.  I have the need to find a control on the 
> page for which I don't know all of the ID, this is because it is made up 
> from several id's forming one new id.  Is there anyway to find this control 
> with only part of the information (the part I have will definately be 
> unique).
> 
> I was hoping that it might be possible to push a regular expression in the 
> string part of the Page.FindControl - but I dont think I can.
> 
> I've tried iterating through all the controls on the page, but - well - it 
> lies!  If I add Page.Controls to the watch it says there's five, if I then 
> add .Item(3) - the html form control, and then add .Controls this is full of 
> more controls...
> 
> Can anyone help me?
> 
> Regards
> 
> Rob 
> 
> 
> 

"Riki" wrote...


> You have to make a recursive loop.
>
> I think that's the only solution here.


Yeah, thats what I thought - messy :o/

Thanks for your reply Riki,

Rob

"Ladislav Mrnka" wrote ...


> Say you have control with uniqueID ctl00$ctl00$ctl00$myLabel. You can find
> this control by calling Page.FindControl("ctl00$ctl00$ctl00$myLabel") or 
> if
> you have reference to control ctl00$ctl00 (named for example myGridRow) 
> you
> can call myGridRow.FindControl("ctl00$myLabel").
>
> Use tracing to see whole tree of controls including naming containers.


Hi Ladislav,

Thanks for the reply.

I should have been more clear in my post, its actually me making the 
multi-part id's for the controls, not .Net because they are in other 
controls etc....

I am using various ID's from my database content and using them in the id's 
of the controls.

Thanks for the information though - very useful.

Regards

Rob