Determine if cell contains data validation

Question

I am writing a VBA code that goes through a range of cells checking if each cell has data validation (drop down menu) and if not assign one to it from a list on another sheet.

I currently have trouble with the line that checks if the current cell already has data validation. I get error 1004 "no cells were found".

Sub datavalidation()

    Dim nlp As Range
    Dim lrds As Long
    Dim wp As Double
    Dim ddrange As Range

    Sheets("DataSheet").Select

        lrds = ActiveSheet.Range("A1").Offset(ActiveSheet.rows.Count - 1, 0).End(xlUp).Row

        Set nlp = Range("I3:I" & lrds)

        For Each cell In nlp

    'error on following line

            If cell.SpecialCells(xlCellTypeSameValidation).Cells.Count < 1 Then
                wp = cell.Offset(0, -8).Value

                Set ddrange = ddrangefunc(wp)

            End If

        Next

End Sub

Any ideas? Thank you

Answer 1

Dim cell As Range, v As Long

For Each cell In Selection.Cells
    v = 0
    On Error Resume Next
    v = cell.SpecialCells(xlCellTypeSameValidation).Count
    On Error GoTo 0

    If v = 0 Then
        Debug.Print "No validation"
    Else
        Debug.Print "Has validation"
    End If
Next

Answer 2

I know this question is old, but since it comes up when Googling "excel vba check if cell has validation", I figured I would add my grain of salt.

If the Range object on which you call SpecialCells represents only a single cell, the entire sheet will be scanned to find matches. If you have a very large amount of data, the methods provided in previous answers may become a bit slow.

Hence, here is a more efficient way to check if a single cell has validation:

Function HasValidation(cell As Range) As Boolean
    Dim t: t = Null

    On Error Resume Next
    t = cell.Validation.Type
    On Error GoTo 0

    HasValidation = Not IsNull(t)
End Function

Answer 3

If you only want to test the activecell, then:

Sub dural()
    Dim r As Range
    On Error GoTo noval
    Set r = Cells.SpecialCells(xlCellTypeAllValidation)
    If Intersect(r, ActiveCell) Is Nothing Then GoTo noval
    MsgBox "Active cell has validation."
    Exit Sub
noval:
    MsgBox "Active cell has no validation."
    On Error GoTo 0
End Sub

Answer 4

Also, if you'd like to get the validation Source you can use the following...

Dim cell as Range
Dim rng as Range
Set rng = Range("A1:A10") 'enter your range

On Error Resume Next 'will skip over the cells with no validation

For Each cell In rng
    msgbox cell.Validation.Formula1
Next cell

Answer 5

This works for me

Sub test()
    On Error Resume Next
        If ActiveCell.SpecialCells(xlCellTypeSameValidation).Cells.Count < 1 Then
            MsgBox "validation"
        Else
            MsgBox "no Validation"
        End If
    On Error GoTo 0
End Sub

Answer 6

About 4 years later, I am looking for cell validation as well. Combining a few from the answers here, this is what I came up with:

Option Explicit

Public Sub ShowValidationInfo()

    Dim rngCell             As Range
    Dim lngValidation       As Long

    For Each rngCell In ActiveSheet.UsedRange

        lngValidation = 0

        On Error Resume Next
        lngValidation = rngCell.SpecialCells(xlCellTypeSameValidation).Count
        On Error GoTo 0

        If lngValidation <> 0 Then
            Debug.Print rngCell.Address
            Debug.Print rngCell.Validation.Formula1
            Debug.Print rngCell.Validation.InCellDropdown
        End If
    Next

End Sub