Hello everyone. I'm having a problem with accessing components. I've looked
for a solution in other forums but until now no one have given me any tiny
clue about how could I solve it. I know there is a solution to it, but, I
couldn't find one. I have a webpage in a website with the the following
structure:

Main MasterPage

   LoginView

       ContentPlaceHolder

          Child MasterPage

              Table with 2 columns
                  ContentPlaceHolder1 (in column 1)
                  ContentPlaceHolder2 (in column 2)
                       

   Than I set a regular content page based on the child MasterPage. In the
content for the ContentPlaceHolder1, I put a RadioButtonList or a button. It
shoul trigger an UpdatePanel I put in the content for the ContentPlaceHolder2.



   First of all, at runtime, the RadioButtonList couldn't be found by it's
ID. So, I did some research and a lot of peopel, with a more simple structure
seemed to solve their problem with dynamic registering the RadioButtonList as
a trigger. Aparently, the trick was using the RadioButtonList UniqueID as the
ControlID for the trigger. And to put al the code in the Page_Init() method.

  My very problem is that I simply can't write a working code to find the
UniqueID. Currently, the (not working) code that I have (in the Iis:

protected void Page_Init()
   {
       if (IsPostBack)
       {
           LoginView lv = (LoginView)Master.Master.FindControl("LoginView1")
; //hardcoded in the main Masterpage
           ContentPlaceHolder cph_dados = (ContentPlaceHolder)lv.FindControl
("ph_conteudo_principal").FindControl("ph_dados"); //hardcoded in the child
masterpage
           ContentPlaceHolder cph_tabela = (ContentPlaceHolder)lv.
FindControl("ph_conteudo_principal").FindControl("ph_tabela"); //hardcoded
int the child masterpage

           AsyncPostBackTrigger trg_cmd_calcula = new AsyncPostBackTrigger()
;
           trg_cmd_calcula.ControlID = ((Button)cph_dados.FindControl
("cmd_calcula")).UniqueID.ToString(); // this example is with a button in the
content page, in cph_dados
           ((UpdatePanel)cph_tabela.FindControl("udp_gridview")).Triggers.
Add(trg_cmd_calcula);
       }
   }


   Thanks in advance for any help.



 Juliano