First newbie question: SSRS Tablix visibility parameter

Question

SSRS: I have two tablix. One dataset.
Tablix 1 = Summary
Tablix 2 = Details
I would like to set a parameter for the user to choose. I do not have a field in the data to use as a parameter to differentiate. I have to use the tablix itself. By name in report code or by visibility in the tablix?

I've tried everything I could find on Stack overflow. But I have used a method in the past with a code in the report properties. But I can't find the code.

I would like the user to choose summary or details or both. Then see the corresponding tablix

Answer 1

I tried to replicate your scenario on my local report project. I create a mutlivalue parameter.

Then I have available values as below

Then I added below expression on visibilty of Summary Tablix.

=IIF(Parameters!ChooseTablix.Count>1,false,
IIF(Parameters!ChooseTablix.Value(0)<>1,true,false))

Below expression for Details Tablix

 =IIF(Parameters!ChooseTablix.Count>1,false,
    IIF(Parameters!ChooseTablix.Value(0)<>2,true,false))