基于其他参数的SSRS灰显参数

Question

I have a parameter in SSRS where the user can select whether or not a provider is Terminated. If they select Yes for Terminated then I want them to be able to select a Termination date range. If they select No, then I want the date range to be greyed out. I found an answer for this elsewhere on the site, but I can't get it to work. I got confused by what they meant by create a dataset based on the SpecifyDate dataset. I tried to replicate this by creating a Terminated dataset, but I don't think I was doing this correctly. This is what I found: possible solution

The Terminated parameter was created with this:

The main dataset has a where filter:

    where status = @terminated

Answer 1

You cannot "Grey out" parameters in SSRS. What you can do is set it to NULL. Your query needs to be able to handle NULL dates if Terminated parameter is set to "No".

So what I would do is, create a dataset called Date which selects desired dates based on the Terminated parameter..

The date dataset might look something like this: ( comment out the declare statement when implementing)-- I'm setting an arbitrary value for the termination dates

declare @teminated varchar(3) = 'Yes'
select
 case when @teminated = 'No' then getdate() else NULL end as start_date
, case when @teminated = 'No' then getdate() else NULL end as end_date

You would then set the default valued for the Termination dates form the dates generated in this dataset.. Hope that made sense.