Here's the complete code. Since ANGULAR brackets like 'greater than' and 'less than' are not permitted I'm using 'NOT EQUAL TO' in the code:
Option Explicit
Function GetHeadersDict() As Scripting.Dictionary
' We must activate the Microsoft Scripting Runtime from Tools --References
Dim result As Scripting.Dictionary
Set result = New Scripting.Dictionary
With result
.Add "Name", False
.Add "Mobile", False
.Add "Phone", False
.Add "City", False
.Add "Designation", False
.Add "DOB", False
End With
Set GetHeadersDict = result
End Function
Function FindHeaderRange(ByVal ws As Worksheet, ByVal header As String) As Range
Set FindHeaderRange = ws.Cells.Find(header, , , xlWhole)
End Function
Sub clearDataSheet2()
Sheets("Destination").Range("A1").CurrentRegion.Offset(1).ClearContents
End Sub
Sub copyColumnData()
On Error GoTo ErrorMessage
Dim ws1 As Worksheet, ws2 As Worksheet
Set ws1 = ThisWorkbook.Sheets("Source")
Set ws2 = ThisWorkbook.Sheets("Destination")
clearDataSheet2
Dim numRowsToCopy As Long
numRowsToCopy = ws1.Cells(RowIndex:=Rows.Count, ColumnIndex:=1).End(xlUp).Row - 1
'MsgBox "The no of rows to copy is " & numRowsToCopy
Dim destRowOffset As Long
destRowOffset = ws2.Cells(RowIndex:=Rows.Count, ColumnIndex:=1).End(xlUp).Row
'MsgBox "The next Blank row is " & destRowOffset
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
Dim dictKey As Variant
Dim header As String
Dim numColumnsToCopy As Long
Dim source As Range
Dim dest As Range
Dim headersDict As Scripting.Dictionary
Set headersDict = GetHeadersDict()
For Each dictKey In headersDict
header = dictKey
If headersDict.Item(header) = False Then
Set source = FindHeaderRange(ws1, header)
If Not (source Is Nothing) Then
Set dest = FindHeaderRange(ws2, header)
If Not (dest Is Nothing) Then
headersDict.Item(header) = True
' Look at successive headers to see if they match
' If so, copy these columns altogether to make the macro faster
For numColumnsToCopy = 1 To headersDict.Count
'MsgBox numColumnsToCopy
If source.Offset(ColumnOffset:=numColumnsToCopy).Value = dest.Offset(ColumnOffset:=numColumnsToCopy).Value Then
headersDict.Item(source.Offset(ColumnOffset:=numColumnsToCopy).Value) = True
Else
Exit For
End If
Next numColumnsToCopy
source.Offset(RowOffset:=1).Resize(RowSize:=numRowsToCopy, ColumnSize:=numColumnsToCopy).Copy _
dest.Offset(RowOffset:=destRowOffset)
End If
End If
End If
Next dictKey
Dim msg As String
For Each dictKey In headersDict
header = dictKey
If headersDict.Item(header) = False Then
msg = msg & vbNewLine & header
End If
Next dictKey
ExitSub:
Application.Calculation = xlCalculationAutomatic
Application.ScreenUpdating = True
If msg Not Equal To "" Then
MsgBox "The following headers were not copied:" & vbNewLine & msg
End If
Exit Sub
ErrorMessage:
MsgBox "An error has occurred: " & Err.Description
Resume ExitSub
End Sub
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