Check that all values in a range are identical - vba

Question

I need to display a message box when all the values in a range on my spreadsheet are zero. Currently I am using the following code:
Dim Cell As Range
For Each Cell In Range("E17:E25")
If Cell.Value = "0" Then
MsgBox ("If hardware is required, please manually populate the corresponding sections.")
End If
Next
The message is displayed, however it is shown 9 times (for each of the cells in the range). What I need is to check if all the values in the range E17:E25 are zero, and then display only one message box. Any ideas?
Thanks.

Answer 1

You want to know if all the values are 0? You could just do
If WorksheetFunction.Sum(Range("E17:E25")) = 0 Then MsgBox ("If hardware is required, please manually populate the corresponding sections.")
No need for loops.
Edit: If you want to check for any other number, and if all cells are that number, you can do this:
Sub t()
Dim rng As Range
Dim myNum as Long
myNum = 1
Set rng = Range("B3:B6")
If WorksheetFunction.CountIf(rng, myNum) = rng.Count Then MsgBox ("All the same!")
End Sub

Answer 2

And cause there are infinite ways to skin a cat here is another approach.
Dim Cell As Range
Dim ZeroCount As Integer
Dim CellCount As Integer
ZeroCount = 0
CellCount = 0
For Each Cell In Range("E17:E25")
CellCount = CellCount + 1
If Cell.Value = 0 Then ZeroCount = ZeroCount + 1
Next Cell
If ZeroCount = CellCount Then MsgBox ("If hardware is required, please manually populate the corresponding sections.")

Answer 3

To test that:
The range doesn't contain any empty values
All cells are the same
function
Function SameRange(rngIn As Range) As Boolean
If Application.CountA(rngIn) = rngIn.Cells.Count Then SameRange = (Application.CountIf(rngIn, rngIn.Cells(1).Value) = rngIn.Cells.Count)
End Function
test
Sub test()
MsgBox SameRange([d1:d5])
End Sub

Answer 4

'something like this
Dim isDataPresent as boolean
isDataPresent = true
for each Cell in Range(....)
if cell.value = "0" then
isDataPresent = false
exit for
end if
next
if not isDataPresent then
show message box here
end if