Expand Collapse all columns in SSRS reports by one single option

To expand and collapse all columns in your report by selecting a single option:

here by selecting a value to a parameter 

1. create one Report parameter

 parameter name: showall

which has non-queried values as follows:
label             values
~~~              ~~~~~
Yes               Expanded
No                Collapsed

 Initial value is: 
Non-Queried : Expanded

2. set visibility property of the row select and write:

=iif(Parameters!ShowAll.Label ="No",true,false) 
                    or
=iif(Parameters!ShowAll.Value = "Collapsed", True, False)  

set toggleItem to a textbox (eg: textbox1)

3. set (textbox1) InitialToggleItem property select and write:

=iif(Parameters!ShowAll.Label ="Yes",true,false) 
             or
=iif(Parameters!ShowAll.Value ="Expanded",true,false)  

RESULT:

----------------------------

ShowAll? Yes

----------------------------

ShowAll? No

  Rocks!!!!
now u can make all the report data to expand and collapse in single option...

also refer to my post in msdn forum.

http://social.msdn.microsoft.com/forums/en-US/sqlreportingservices/thread/cba00cd6-7c39-4233-a06b-b00ff1dd7672/

EnJoY!!!!...

CoOoOlLlL.....