VBA BeforeSave check for Missing Data - vba

Question

I'm struggling with some VBA code and the BeforeSave methodology.
I've been all over the forums but can't locate the answer I need, so would love some help please.
My question! On saving I need the code to look at Column H (named Claim USD) of a 'Table' (named Claims) for a number value and then if any of the cells has a value to then look at Column I (named Claim Date) and make sure there is a date in there. I have already data validated column I to only accept date entries.
I have found the code below, and tested it for what it does and it works. I'm just not sure how to incorporate my element. Can anyone offer me some help?
Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
Dim rsave As Range
Dim cell As Range
Set rsave = Sheet2.Range("I8,I500")
For Each cell In rsave
If cell = "" Then
Dim missdata
missdata = MsgBox("missing data", vbOKOnly, "Missing Data")
Cancel = True
cell.Select
Exit For
End If
Next cell
End Sub

Answer 1

I have created a custom Class for validation see here. It is very overkill for what you are trying to do but what it will allow you to do is capture all of the cells with errors and do what you'd like with them. You can download and import the 2 class modules Validator.cls and ValidatorErrors.cls And then use the following
Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
Unflag
Dim rsave As Range
Dim rcell As Range
Dim v AS New Validator
Set rsave = Sheet2.Range("Table1[Estimate Date]")
with v
For Each rcell In rsave
.validates rcell,rcell.address
.presence
Next rcell
End With
If not(v.is_valid) Then
FlagCollection v.errors
MsgBox("Missing data in " & v.unique_keys.Count & " Cell(s).", vbOKOnly, "Missing Data")
Cancel = True
End IF
Set v = Nothing
End Sub
Public Sub flag(flag As String, comment As String)
Dim comments As String
If has_comments(flag) Then
comments = Sheet2.Range(flag).comment.Text & vbNewLine & comment
Else
comments = comment
End If
Sheet2.Range(flag).Interior.Color = RGB(255, 255, 102)
Sheet2.Range(flag).ClearComments
Sheet2.Range(flag).AddComment comments
End Sub
Public Sub FlagCollection(all_cells As Collection)
Dim flag_cell As ValidatorError
For Each flag_cell In all_cells
flag flag_cell.field, flag_cell.error_message
Next flag_cell
End Sub
Public Sub Unflag()
Cells.Select
Selection.Interior.ColorIndex = xlNone
Selection.ClearComments
End Sub
Public Function has_comments(c_cell As String) As Boolean
On Error Resume Next
Sheet1.Range(c_cell).comment.Text
has_comments = Not (CLng(Err.Number) = 91)
End Function
This will flag every field that has an error in yellow and add a comment as to what the issue is you could also determine a way to tell the user exactly where the errors are using v.uniq_keys which returns a collection of cell address' that fail validation of presence.

Answer 2

I'm pretty sure I cracked it, well it works anyway. Code below (for those who are interested anyway!!)
Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean)
Dim rsave As Range
Dim cell As Range
Set rsave = Sheet2.Range("Table1[Estimated Claim (USD)]")
For Each cell In rsave
If cell.Value <> "" And cell.Offset(0, 1).Value = "" Then
Dim missdata
missdata = MsgBox("Missing Data - Enter the Date for WorkBook to Save", vbOKOnly, "Missing Data")
Cancel = True
cell.Offset(0, 1).Select
Exit For
End If
Next cell
End Sub
I've now got to loop this through three other column headers checking for same criteria. If anyone knows a quicker code method. Would appreciate the help!