Delete all rows containing values outside of a specified numeric range - excel

Question

I am completely new to visual basic. I have a few spreadsheets containing numbers. I want to delete any rows containing numbers outside of specific ranges. Is there a straightforward way of doing this in visual basic?
For example, in this first spreadsheet (image linked) I want to delete rows that contain cells with numbers outside of these two ranges: 60101-60501 and 74132-74532.
Can anyone give me some pointers? Thanks!

Answer 1

Code
You need to call it for your own needs as shown on the routine "Exec_DeleteRows". I assumed that you needed if it is equals or less to the one that you state on your routine. In this example, I will delete the rows where values are between 501-570 and then the ones between 100-200
Sub Exec_DeleteRows()
Call Exec_DeleteRowsInRangeBasedOnNumberValue(Range("C8:H11"), 501, 570)
Call Exec_DeleteRowsInRangeBasedOnNumberValue(Range("C8:H11"), 100, 200)
End Sub
Sub Exec_DeleteRowsInRangeBasedOnNumberValue(RangeToWorkIn As Range, NumPivotToDeleteRowBottom As Double, NumPivotToDeleteRowTop As Double)
Dim RangeRowsToDelete As Range
Dim ItemRange As Range
For Each ItemRange In RangeToWorkIn
If IsNumeric(ItemRange.Value) = False Then GoTo SkipStep1
If ItemRange.Value >= NumPivotToDeleteRowBottom And ItemRange.Value <= NumPivotToDeleteRowTop Then ' 1. If ItemRange.Value >= NumPivotToDeleteRowBottom And ItemRange.Value <= NumPivotToDeleteRowTop
If RangeRowsToDelete Is Nothing Then ' 2. If RangeRowsToDelete Is Nothing
Set RangeRowsToDelete = RangeToWorkIn.Parent.Rows(ItemRange.Row)
Else ' 2. If RangeRowsToDelete Is Nothing
Set RangeRowsToDelete = Union(RangeToWorkIn.Parent.Rows(ItemRange.Row), RangeRowsToDelete)
End If ' 2. If RangeRowsToDelete Is Nothing
End If ' 1. If ItemRange.Value >= NumPivotToDeleteRowBottom And ItemRange.Value <= NumPivotToDeleteRowTop
SkipStep1:
Next ItemRange
If Not (RangeRowsToDelete Is Nothing) Then RangeRowsToDelete.EntireRow.Delete
End Sub
Demo

Answer 2

Delete Rows Containing Wrong Numbers
It is assumed that the data starts in A1 of worksheet Sheet1 in the workbook containing this code (ThisWorkbook) and has a row of headers (2).
This is just a basic example to get familiar with variables, data types, objects, loops, and If statements. It can be improved on multiple accounts.
Option Explicit
Sub DeleteWrongRows()
Dim wb As Workbook: Set wb = ThisWorkbook ' workbook containing this code
Dim ws As Worksheet: Set ws = wb.Worksheets("Sheet1") ' worksheet
Dim rg As Range: Set rg = ws.Range("A1").CurrentRegion ' range
Application.ScreenUpdating = False
Dim rrg As Range ' Row Range
Dim rCell As Range ' Cell in Row Range
Dim rValue As Variant ' Value in Cell
Dim r As Long ' Row
Dim DoDelete As Boolean
' Loop backwards through the rows of the range.
For r = rg.Rows.Count To 2 Step -1
Set rrg = rg.Rows(r)
' Loop through cells in row.
For Each rCell In rrg.Cells
rValue = rCell.Value
If IsNumeric(rValue) Then ' is a number
If rValue >= 60101 And rValue <= 60501 Then ' keep
ElseIf rValue >= 74132 And rValue <= 74532 Then ' keep
Else ' delete (outside the number ranges)
DoDelete = True
End If
Else ' is not a number
DoDelete = True
End If
If DoDelete Then ' found a cell containing a wrong value
rCell.EntireRow.Delete
DoDelete = False
Exit For ' no need to check any more cells
'Else ' found no cell containing a wrong value (do nothing)
End If
Next rCell
Next r
Application.ScreenUpdating = True
MsgBox "Rows with wrong numbers deleted.", vbInformation
End Sub

Answer 3

Using Range.Delete is the built-in way of completely erasing a row in Excel VBA. To check an entire row for numbers meeting a certain criteria, you would need a Loop and an If Statement.
To evaluate a lot of values at a faster pace, it is smart to first grab the relevant data off the Excel sheet into an Array. Once in the array, it is easy to set up the loop to run from the first element (LBound) to the final element (UBound) for each row and column of the array.
Also, when deleting a lot of Ranges from a worksheet, it is faster and less messy to first collect (Union) the ranges while you're still looping, and then do the delete as a single step at the end. This way the Range addresses aren't changing during the loop and you don't need to re-adjust in order to track their new locations. That and we can save a lot of time since the application wants to pause and recalculate the sheet after every Deletion.
All of those ideas put together:
Sub Example()
DeleteRowsOutside ThisWorkbook.Worksheets("Sheet1"), Array(60101, 60501), Array(74132, 74532)
End Sub
Sub DeleteRowsOutside(OnSheet As Worksheet, ParamArray Min_and_Max() As Variant)
If OnSheet Is Nothing Then Set OnSheet = ActiveSheet
'Find the Bottom Corner of the sheet
Dim BottomCorner As Range
Set BottomCorner = OnSheet.Cells.Find("*", After:=OnSheet.Range("A1"), SearchDirection:=xlPrevious)
If BottomCorner Is Nothing Then Exit Sub
'Grab all values into an array
Dim ValArr() As Variant
ValArr = OnSheet.Range(OnSheet.Cells(1, 1), BottomCorner).Value
'Check each row value against min & max
Dim i As Long, j As Long, DeleteRows As Range
For i = LBound(ValArr, 1) To UBound(ValArr, 1) 'For each Row
For j = LBound(ValArr, 2) To UBound(ValArr, 2) 'For each column
Dim v As Variant: v = ValArr(i, j)
If IsNumeric(v) Then
Dim BoundaryPair As Variant, Is_Within_A_Boundary As Boolean
Is_Within_A_Boundary = False 'default value
For Each BoundaryPair In Min_and_Max
If v >= BoundaryPair(0) And v <= BoundaryPair(1) Then
Is_Within_A_Boundary = True
Exit For
End If
Next BoundaryPair
If Not Is_Within_A_Boundary Then
'v is not within any acceptable ranges! Mark row for deletion
If DeleteRows Is Nothing Then
Set DeleteRows = OnSheet.Rows(i)
Else
Set DeleteRows = Union(DeleteRows, OnSheet.Rows(i))
End If
GoTo NextRow 'skip to next row
End If
End If
Next j
NextRow:
Next i
If Not DeleteRows Is Nothing Then DeleteRows.EntireRow.Delete
End Sub Exit For 'skip to next row
End If
End If
Next j
Next i
If Not DeleteRows Is Nothing Then DeleteRows.EntireRow.Delete
End Sub
I use a ParamArray to accept a variable number of Min and Max ranges. To keep things tidy, the Min and Max pairs are each in an array of their own. As long as all the numbers in the row are within any of the provided ranges, the row will not be deleted.

Answer 4

Here's some code with Regex and with scripting dictionary that I've been working on. I made this for my purposes, but it may be useful here and to others.
I found a way for selecting noncontinguous cells based on an array and then deleting those cells.
In this case, I selected by row number because VBA prevented deletion of rows due to overlapping ranges.
Sub findvalues()
Dim Reg_Exp, regexMatches, dict As Object
Dim anArr As Variant
Dim r As Range, rC As Range
Set r = Sheets(3).UsedRange
Set r = r.Offset(1).Resize(r.Rows.Count - 1, r.Columns.Count)
Set Reg_Exp = CreateObject("vbscript.regexp")
With Reg_Exp
.Pattern = "^[6-6]?[0-0]?[1-5]?[0-0]?[1-1]?$|^60501$" 'This pattern is for the 60101 to 60501 range.
End With
Set dict = CreateObject("Scripting.Dictionary")
For Each rC In r
If rC.Value = "" Then GoTo NextRC ''skip blanks
Set regexMatches = Reg_Exp.Execute(rC.Value)
If regexMatches.Count = 0 Then
On Error Resume Next
dict.Add rC.Row & ":" & rC.Row, 1
End If
NextRC:
Next rC
On Error GoTo 0
anArr = Join(dict.Keys, ", ")
Sheets(3).Range(anArr).Delete Shift:=xlShiftUp
End Sub