How to update slicer cache with VBA

Question

I'm using Excel VBA to hide/show elements on slicer depending upon user selection.

I have the following code :

 Private Sub removeFilterWithSlicer()

 Dim slicerCache As slicerCache

 Set slicerCache = ThisWorkbook.SlicerCaches("Slicer_Channel1")

 slicerCache.SlicerItems("A").Selected = False
 slicerCache.SlicerItems("B").Selected = False
 slicerCache.SlicerItems("C").Selected = False
 slicerCache.SlicerItems("D").Selected = False
 slicerCache.SlicerItems("E").Selected = False
 slicerCache.SlicerItems("F").Selected = False

End Sub

where A, B etc. are names of elements in slicer. I've cross checked the name of slicer cache ("Slicer_Channel1"). The issue is that the elements don't get deselected as they are supposed to. When I'm debugging the code, I found that each element gets deselected one by one but as soon as I reach the end of procedure i.e. End Sub, they all get back to being in selected state.

Any pointers ?

Answer 1

This code shows how to filter a Slicer on an array called vSelection.

Option Explicit

Sub FilterSlicer()
Dim slr As Slicer
Dim sc As SlicerCache
Dim si As SlicerItem
Dim i As Long
Dim vItem As Variant
Dim vSelection As Variant

Set sc = ActiveWorkbook.SlicerCaches("Slicer_ID")
'Set sc = slr.SlicerCache

vSelection = Array("B", "C", "E")

For Each pt In sc.PivotTables
    pt.ManualUpdate = True 'Stops PivotTable from refreshing after each PivotItem is changed
Next pt

With sc

    'At least one item must remain visible in the Slicer at all times, so make the first
    'item visible, and at the end of the routine, check if it actually  *should* be visible
    .SlicerItems(1).Selected = True

    'Hide any other items that aren't already hidden.
    'Note that it is far quicker to check the status than to change it.
    ' So only hide each item if it isn't already hidden
    For i = 2 To .SlicerItems.Count
        If .SlicerItems(i).Selected Then .SlicerItems(i).Selected = False
    Next i

    'Make the PivotItems of interest visible
    On Error Resume Next 'In case one of the items isn't found
    For Each vItem In vSelection
        .SlicerItems(vItem).Selected = True
    Next vItem
    On Error GoTo 0

    'Hide the first PivotItem, unless it is one of the countries of interest
    On Error Resume Next
    If InStr(UCase(Join(vSelection, "|")), UCase(.SlicerItems(1).Name)) = 0 Then .SlicerItems(1).Selected = False
    If Err.Number <> 0 Then
        .ClearAllFilters
        MsgBox Title:="No Items Found", Prompt:="None of the desired items was found in the Slicer, so I have cleared the filter"
    End If
    On Error GoTo 0
End With


For Each pt In sc.PivotTables
    pt.ManualUpdate = False
Next pt

End Sub

Answer 2

at least one has to be selected. works the same way when selecting with a mouse. you cannot un-select all