Expand All in one shot

[Wajid55]

Is there a way to Expand all rows in one shot in RS, I can expand groups one by one, but I am trying to provide a feature to users to Expand All groups in one click.

Is there any way to do it?

 

[RiverGuy]

As far as I know, you need to have them either expanded or collapsed initially when the report is rendered, and cannot do them all at once once rendered.

 

[huggyd]

Adding a parameter to control the initial state is the best I can come up with so far.