Help with error handing

I am using the Marco below, pieced together from previous code from this board, to move selected data to a new sheet. It works like I need except that if a user puts the column letter instead of the column number for the Auto Filter field, flagged in bold in the Marco, I get and error. How can this error be handled? I used on error Resume Next and it takes care of the error but instead of filtered data all data is put in the new sheet, thought there might be a better way, Thanks for your help

Option Explicit
Dim FilterCriteria
Dim CurrentsheetName As String
Dim NewFileName As String
Dim ws As Worksheet
Dim Flag As Boolean
Dim C

Public Sub Filter_Data()
Flag = False
Application.ScreenUpdating = False
Application.DisplayAlerts = False

CurrentsheetName = ActiveSheet.Name
FilterCriteria = UCase(InputBox("Enter Your Filter Criteria"))

'CHANGE THIS RANGE WHEN UPDATING THE RANGE
'THERE ARE two PLACES THAT NEED TO BE CHANGED!
For Each C In Range("a1:f752") '#1
If UCase(C.Value) = FilterCriteria Then Flag = True: Exit For
Next C
If Not Flag Or FilterCriteria = "" Then MsgBox "No Match To Your Criteria ": Exit Sub
'CHANGE THIS RANGE WHEN UPDATING THE RANGE
'THERE ARE two PLACES THAT NEED TO BE CHANGED!
Range("A1:f752").Select '#2
Selection.AutoFilter
'The error happens below if someone puts the column letter and not the number
Selection.AutoFilter field:=(InputBox("Enter Column NUMBER, A=1, B=2, C=3, D=4, E=5, F=6... THIS MUST BE A NUMBER AND NOT A LETTER")), Criteria1:=FilterCriteria
Selection.SpecialCells(xlCellTypeVisible).Select
Selection.Copy

With Worksheets.Add
.Range("A1").PasteSpecial Paste:=xlPasteAll
.Move after:=Worksheets(Worksheets.Count)
For Each ws In Worksheets
If ws.Name = FilterCriteria Then ws.Delete
Next ws
.Name = FilterCriteria
End With

Cells.Select
Selection.Columns.AutoFit
Range("A1").Select
Worksheets(CurrentsheetName).Activate
Selection.AutoFilter field:=1
Selection.AutoFilter
Range("B65536").Select
Selection.End(xlUp).Select
ActiveCell.Offset(1, 0).Select
Application.DisplayAlerts = True
Application.ScreenUpdating = True
End Sub

[dk]

You can use the inputbox of the Excel application rather than the VBA inputbox. The Excel one allow you to restrict the values the user can enter by setting it's type argument to one of the following or a combination (e.g. for text and number use 3)


0 A formula
1 A number
2 Text (a string)
4 A logical value (True or False)
8 A cell reference, as a Range object
16 An error value, such as #N/A
64 An array of values

Just change the line with the second inputbox to this:-

Selection.AutoFilter field:=(Application.InputBox(prompt:="Enter Column NUMBER, A=1, B=2, C=3, D=4, E=5, F=6... THIS MUST BE A NUMBER AND NOT A LETTER", Type:=1)), Criteria1:=FilterCriteria


HTH,
D

Thanks DK, always get fast and useful info on this board