Building a selection tool - problem with the range

Hello everybody.

I am building a selection tool with a whole list of products. this excel list is filtering all the products based on the criteria. The criteria are:

Type
Height
Lengte
Watt D7:D30

But i have created a filter that is based on the type value in a cell. I have the following two problem.

- after typing the value i have to press enter for filtering, can this be done automatic?
- anf for the criteria watt I want that excel filter a range. for example: if i press the value "1000" i want that is filter from 985 to 1015

Who can help me with this problems?

    
Private Sub Worksheet_Change(ByVal Target As Range)
Dim rownum As Long, colnum As Long
Dim tblname As String, mylist As Object
Dim caret As Long, caret2 As Long
Dim crit1 As String, crit2 As String, optype As String, marker As String

'Set this next value to the row number above your filter
Const testrow = 6
'Change the marker to something other than the caret ^ if required
marker = "^"

   On Error GoTo Worksheet_Change_Error

rownum = Target.Row
colnum = Target.Column
On Error Resume Next

If Target.Count > 1 Then
    ActiveSheet.ShowAllData
    Target.Interior.ColorIndex = -4142 'clear colour from range
    GoTo cleanup
End If

If rownum <> testrow Then GoTo cleanup
crit1 = Target.Value
caret = InStr(Target, marker)
caret2 = InStr(Target, marker & marker)

If caret Then
crit1 = Trim(Left(Target.Value, caret - 1))
crit2 = WorksheetFunction.Substitute(Mid(Target.Value, caret + 1), marker, "")
optype = xlAnd
End If

If caret2 Then
optype = xlOr
End If

If Val(Application.Version) < 11 Then GoTo earlyversion

     Set mylist = ActiveSheet.ListObjects
     If mylist.Count Then ' A List or Table Object is used
            tblname = mylist(1).Name
        
        If Cells(rownum, colnum).Value = "" Then ' No filter choice
             mylist(tblname).Range.AutoFilter Field:=colnum
             GoTo cleanup
        ElseIf caret Then
            mylist(tblname).Range.AutoFilter Field:=colnum, _
            Criteria1:=crit1, Operator:=optype, Criteria2:=crit2
            GoTo cleanup
        Else
            mylist(tblname).Range.AutoFilter Field:=colnum, _
            Criteria1:=crit1
            GoTo cleanup
    End If
    
    ' There is no List object, it is a Range so treat the same as
    ' earlier versions of Excel
    
End If

earlyversion:
'This version of Excel does not support List Objects
    If Cells(rownum, colnum).Value = "" Then
        Selection.AutoFilter Field:=colnum
    ElseIf caret Then
        Selection.AutoFilter Field:=colnum, _
        Criteria1:=crit1, Operator:=optype, Criteria2:=crit2
    Else
    Selection.AutoFilter Field:=colnum, Criteria1:=crit1
    End If

cleanup:
'keep focus on same cell and set colour index if Selection is made
Range(Target.Address).Activate
If ActiveCell <> "" Then
    ActiveCell.Interior.ColorIndex = 40 'change to colour of your choice
Else
    ActiveCell.Interior.ColorIndex = -4142
    End If


   On Error GoTo 0
   Exit Sub

Worksheet_Change_Error:

    MsgBox "Error " & Err.Number & " (" & Err.Description & ") in procedure Worksheet_Change of VBA Document Sheet4"
    ActiveCell.Interior.ColorIndex = -4142
    On Error GoTo 0
    

End Sub

I have already a other solutions. i am now using this code:

Private Sub Worksheet_Change(ByVal Target As Range)
    If Not Intersect(Target, Range("A5:F5")) Is Nothing Then
        Select Case Target.Address
            Case Is = "$A$5"
                If Range("A5").Value = "" Then
                    Range("A6:F37").AutoFilter Field:=1
                Else
                    Range("A6:F37").AutoFilter Field:=1, _
                        Criteria1:=Range("A5").Value
                End If
            Case Is = "$B$5"
                If Range("B5").Value = "" Then
                    Range("A6:F37").AutoFilter Field:=2
                Else
                    Range("A6:F37").AutoFilter Field:=2, _
                        Criteria1:=Range("B5").Value
                End If
            Case Is = "$C$5"
                If Range("C5").Value = "" Then
                    Range("A6:F37").AutoFilter Field:=3
                Else
                    Range("A6:F37").AutoFilter Field:=3, _
                        Criteria1:=Range("C5").Value
                End If
            Case Is = "$D$5"
                If Range("D5").Value = "" Then
                    Range("A6:F37").AutoFilter Field:=4
                Else
                    Range("A6:F37").AutoFilter Field:=4, _
                        Criteria1:=Range("D5").Value
                End If
                         
        End Select
    End If
End Sub

This is for 5 filter based on cell type value, I want to use the code below as watt filter for minimum - maximum, but i can not find a way to add this in the code above. Can somebody help me with this.

Range("A6:F37").AutoFilter
Range("A2:F37").AutoFilter Field:=6, Criteria1:=">=" & Range("A1").Value, _
Operator:=xlAnd, Criteria2:="<=" & Range("B1").Value

Hopefully one of you guys want to help me with this problem

Yes thankyou it works!