I came here looking for a way to find the last row in a non-contiguous range. Most responses here only check one column at a time so I created a few different functions to solve this problem. I will admit, though, that my .Find() implementation is essentially the same as Shai Rado's answer.
Implementation 1 - Uses Range().Find() in reverse order
Function LastRowInRange_Find(ByVal rng As Range) As Long
'searches range from bottom up stopping when it finds anything (*)
Dim rngFind As Range
Set rngFind = rng.Find( What:="*", _
After:=Cells(rng.row, rng.Column), _
LookAt:=xlWhole, _
LookIn:=xlValues, _
SearchOrder:=xlByRows, _
SearchDirection:=xlPrevious)
If Not rngFind Is Nothing Then
LastRowInRange_Find = rngFind.row
Else
LastRowInRange_Find = rng.row
End If
End Function
Implementation 2 - Uses Range().End(xlUp) on each column
Function LastRowInRange_xlUp(ByVal rng As Range) As Long
Dim lastRowCurrent As Long
Dim lastRowBest As Long
'loop through columns in range
Dim i As Long
For i = rng.Column To rng.Column + rng.Columns.count - 1
If rng.Rows.count < Rows.count Then
lastRowCurrent = Cells(rng.row + rng.Rows.count, i).End(xlUp).row
Else
lastRowCurrent = Cells(rng.Rows.count, i).End(xlUp).row
End If
If lastRowCurrent > lastRowBest Then
lastRowBest = lastRowCurrent
End If
Next i
If lastRowBest < rng.row Then
LastRowInRange_xlUp = rng.row
Else
LastRowInRange_xlUp = lastRowBest
End If
End Function
Implementation 3 - Loops through an Array in reverse order
Function LastRowInRange_Array(ByVal rng As Range) As Long
'store range's data as an array
Dim rngValues As Variant
rngValues = rng.Value2
Dim lastRow As Long
Dim i As Long
Dim j As Long
'loop through range from left to right and from bottom upwards
For i = LBound(rngValues, 2) To UBound(rngValues, 2) 'columns
For j = UBound(rngValues, 1) To LBound(rngValues, 1) Step -1 'rows
'if cell is not empty
If Len(Trim(rngValues(j, i))) > 0 Then
If j > lastRow Then lastRow = j
Exit For
End If
Next j
Next i
If lastRow = 0 Then
LastRowInRange_Array = rng.row
Else
LastRowInRange_Array = lastRow + rng.row - 1
End If
End Function
I have not tested which of these implementations works fastest on large sets of data, but I would imagine that the winner would be _Array since it is not looping through each cell on the sheet individually but instead loops through the data stored in memory. However, I have included all 3 for variety :)
How to use
To use these functions, you drop them into your code sheet/module, specify a range as their parameter, and then they will return the "lowest" filled row within that range.
Here's how you can use any of them to solve the initial problem that was asked:
Sub answer()
Dim testRange As Range
Set testRange = Range("A1:F28")
MsgBox LastRowInRange_Find(testRange)
MsgBox LastRowInRange_xlUp(testRange)
MsgBox LastRowInRange_Array(testRange)
End Sub
Each of these will return 18.
Maxlastrow in both columns A and B. – Shai Rado