Excel VBA-Duplicates run with button/add location - vba

Question

I am new to Excel VBA and I really need your help. I have a code that will look for the duplicate values in Column A. This code will highlight the duplicate values. I want:
1.) This code to ONLY run when I click on a button.
2.) I would like to have (somewhere in the same worksheet), the number of duplicate results and a hyper link that when you click on it will direct you the duplicate result (this is because I have sometimes huge files that I need to validate). Here is the code I currently have:
Sub Worksheet_Change(ByVal Target As Excel.Range)
Dim C As Range, i As Long
If Not Intersect(Target, Me.[A:A]) Is Nothing Then
Application.EnableEvents = False
For Each C In Target
If C.Column = 1 And C.Value > "" Then
If WorksheetFunction.CountIf(Me.[A:A], C.Value) > 1 Then
i = C.Interior.ColorIndex
f = C.Font.ColorIndex
C.Interior.ColorIndex = 3 ' Red
C.Font.ColorIndex = 6 ' Yellow
C.Select
MsgBox "Duplicate Entry !", vbCritical, "Error"
C.Interior.ColorIndex = i
C.Font.ColorIndex = f
End If
End If
Next
Application.EnableEvents = True
End If
End Sub
I would really appreciate it if you help me with this.

Answer 1

Add the code to Module1 Alt+F11
Option Explicit
Sub MyButton()
Dim RangeCell As Range, _
MyData As Range
Dim MyDupList As String
Dim intMyCounter As Integer
Dim MyUniqueList As Object
Dim lngLastRow As Long, lngLoopRow As Long
Dim lngWriteRow As Long
Set MyData = Range("A1:A" & Cells(Rows.Count, "A").End(xlUp).Row)
Set MyUniqueList = CreateObject("Scripting.Dictionary")
Application.ScreenUpdating = False
MyDupList = "": intMyCounter = 0
'// Find Duplicate
For Each RangeCell In MyData
If RangeCell <> "V" And RangeCell <> "R" Then
If Evaluate("COUNTIF(" & MyData.Address & "," & RangeCell.Address & ")") > 1 Then
'// Color. Change to suit RGB(141, 180, 226).
RangeCell.Interior.Color = RGB(141, 255, 226)
If MyUniqueList.exists(CStr(RangeCell)) = False Then
intMyCounter = intMyCounter + 1
MyUniqueList.Add CStr(RangeCell), intMyCounter
If MyDupList = "" Then
MyDupList = RangeCell
Else
MyDupList = MyDupList & vbNewLine & RangeCell
End If
End If
Else
RangeCell.Interior.ColorIndex = xlNone
End If
End If
Next RangeCell
'// Move duplicate from Column 1 to Column 7 = (G:G)
lngWriteRow = 1
lngLastRow = Cells(Rows.Count, 1).End(xlUp).Row
For lngLoopRow = lngLastRow To 1 Step -1
With Cells(lngLoopRow, 1)
If WorksheetFunction.CountIf(Range("A1:A" & lngLastRow), .Value) > 1 Then
If Range("G:G").Find(.Value, lookat:=xlWhole) Is Nothing Then
Cells(lngWriteRow, 7) = .Value
lngWriteRow = lngWriteRow + 1
End If
End If
End With
Next lngLoopRow
Set MyData = Nothing: Set MyUniqueList = Nothing
Application.ScreenUpdating = False
If MyDupList <> "" Then
MsgBox "Duplicate entries have been found:" & vbNewLine & MyDupList
Else
MsgBox "There were no duplicates found in " & MyData.Address
End If
End Sub
.
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