Force a selection in a drop-down slicer

[mikechittick]

I have a report which requires that a selection is made in a dropdown slicer before clicking on a button which navigates to another page.  The other page has synced slicers, which means it only works if a selection is made.  Unfortunately, the default value is "All" on a dropdown, and I can't figure out how to force a selection from the slicer.  Any ideas?

[Anonymous · Accepted solution]

The only thing I can think of is manually selecting a value you know will be there for anyone viewing the report. This will make it default to that value, and they won't have the ability to "Select All' unless they hit the eraser. You might utilize SELECTEDVALUE() in a measure on that page for some sort of feedback if they circumvent your one-only restriction.

Valid Selection = IF(ISNUMBER(SELECTEDVALUE(Data[ID], "xxx")), "Please click 'Submit'", "Please select a single ID before submitting.")

[mikechittick]

Not ideal, but it'll work!  Thanks for the suggestion!