Excel - Create Named Ranges from Column Headers

Sub Create_Named_Ranges()

Dim wb As Workbook, ws As Worksheet
Dim lrow As Long, lcol As Long, i As Long

Dim myName As String, Start As String

Dim wsName As String
' set the row number where headings are held as a constant
' change this to the row number required if not row 1
Const Rowno = 1

' set the Offset as the number of rows below Rowno, where the
' data begins
Const Offset = 2

' set the starting column for the data, in this case 1
' change if the data does not start in column A
Const Colno = 1

TK = Rowno + Offset

' On Error GoTo CreateNames_Error

Set wb = ActiveWorkbook
Set ws = ActiveSheet

' count the number of columns used in the row designated to
' have the header names

lcol = ws.Cells(Rowno, 1).End(xlToRight).Column
frow = ws.Cells(TK, Colno).End(xlDown).Row
Start = Cells(Rowno, Colno).Address

'replace blanks in worksheet names with underscore for the purposes of adding range names
wsName = ws.Name
wsName = Replace(wsName, " ", "_")

wb.Names.Add Name:=wsName & "_lcol", RefersTo:="=COUNT($" & Rowno & ":$" & Rowno & ")"
'wb.Names.Add Name:=wsName & "_lrow", RefersToR1C1:="=COUNT(C" & Colno & ")"
wb.Names.Add Name:=wsName & "_lrow", RefersToR1C1:="=COUNT(" & "R" & TK & "C" & Colno & ":" & "R" & frow & "C" & Colno & ")"
wb.Names.Add Name:=wsName & "_myData", RefersTo:="=" & Start & ":INDEX($1:$65536," & frow & "," & wsName & "_lcol)"
'wb.Names.Add Name:=wsName & "_myData", RefersTo:="=" & Start & ":INDEX($1:$65536," & wsName & frow & "," & wsName & "_lcol)"

For i = Colno To lcol
' if a column header contains space or other invalid character etc, replace with underscore
myName = Replace(Cells(Rowno, i).Value, "/", "_")
myName = Replace(myName, " ", "_")
myName = Replace(myName, "-", "_")
myName = Replace(myName, "<", "LT")
myName = Replace(myName, ">", "GT")
myName = Replace(myName, "=", "EQ")
myName = Replace(myName, "#", "NUM")
myName = Replace(myName, "&", "_")
myName = Replace(myName, "(", "_")
myName = Replace(myName, ")", "_")
myName = Replace(myName, "?", "_")
myName = Replace(myName, "\", "_")

If myName = "" Then
' if column header is blank, warn the user and stop the macro at that point
' names will only be created for those cells with text in them.
MsgBox "Missing Name in column " & i & vbCrLf _
& "Please Enter a Name and run macro again"
Exit Sub
End If
wb.Names.Add Name:=wsName & "_" & myName, RefersToR1C1:= _
"=R" & Rowno + Offset & "C" & i & ":INDEX(C" & i & "," & frow & ")"

nexti:
Next i

On Error GoTo 0
MsgBox "All dynamic Named ranges have been created"
Exit Sub

CreateNames_Error:

MsgBox "Error " & Err.Number & " (" & Err.Description & _
") in procedure CreateNames"

End Sub