Excel loop macro ending early and needing to keep files open to copy several loops(different files) - vba

Question

I'm having a bit of a problem with this VBA code
Sub upONGOING_Train1()
ScreenUpdating = False
'set variables
Dim rFndCell As Range
Dim strData As String
Dim stFnd As String
Dim fCol As Integer
Dim oCol As Integer
Dim SH As Worksheet
Dim WS As Worksheet
Dim strFName As String
Dim objCell As Object
Set WS = ThisWorkbook.Sheets("Trains")
For Each objCell In WS.Range("L3:L100")
oCol = objCell.Column
strFName = WS.Cells(, oCol).Offset(objCell.Row - 1, 0)
On Error GoTo BLANK: 'skip macro if no train
Workbooks.Open Filename:=strFName 'open ongoing report
Set SH = Worksheets("Trains") 'set sheet
stFnd = WS.Cells(, oCol).Offset(objCell.Row - 1, 2).Value 'set connote
With SH
Set rFndCell = .Range("C3:C1100").Find(stFnd, LookIn:=xlValues)
If Not rFndCell Is Nothing Then
fCol = rFndCell.Column
WS.Cells(, oCol).Offset(objCell.Row - 1, 3).Resize(1, 6).Copy
SH.Cells(, fCol).Offset(rFndCell.Row - 1, 10).Resize(1, 6).PasteSpecial xlPasteValues 'paste values in ongoing report if connote found
ActiveWorkbook.Save 'save ongoing report
ActiveWorkbook.Close 'close ongoing report
Else 'Can't find the item
End If
End With
BLANK:
Next objCell
ScreenUpdating = True
End Sub
What I want it to do is - for every row in L3:L100
Open file listed in column "L" (if there or skip line to next one) and go to sheet
Match value from original sheet column "N" to "C3:C1100" in newly opened sheet
Copy columns "O:T" and paste relative to the matching value in the opened sheet(M:R) and save
However when I leave a gap of 2 rows it gives me the error for file not found instead of proceeding to the next loop like it does when there is only 1 row missing.
Seems i can't post images yet.
Also if anyone can point me in a good direction on how to open the sheet in the cell reference only if it is not already open it will usually only have 2 files to use (max of 4 at end of quarter).
Its just too much trouble to click OK on all the windows that pop up when you try to reopen an already open workbook.
If its any help to get your head around it.
I have 2 separate reports for 2 clients(new each quarter so max of 4 sheets at a time) that will already have the names to be searched (2 sheets in each book).
Any help would be greatly appreciated
Thanks heaps
Thanks to those who have put forth suggestions and code.
I'll them out tomorrow and failing that I've just come up with another idea that to re-purpose some other code I have but didn't realize would help.
The code basically copies what I need to a blank tab and deletes rows with a given value - with some formulas to help sort this would give me a block of rows with no breaks all going to the same destination file.
Thus allowing me to run the (a bit more streamlined Thanks everyone) loop over the remaining rows.

Answer 1

On Error GoTo BLANK
Workbooks.Open Filename:=strFName
Change the above into this:
On Error Resume Next
Workbooks.Open Filename:=strFName
If Err.Number <> 0 Then Goto Blank
As to hpw keep the workbook open, you can leave it open (no .close) but then when you want to open it check first if it is open (i.e. using Workbooks("name")), with some error handling using the same mechanism as above, if error exists then the wb is not already open, you open it.
Finally, avoid counting on the Active stuff, such as the ActiveWorkbook`. Instead, make an explicit reference to you wb, i.e.:
Set wb = Workbooks.Open(Filename:=strFName)
Set SH = wb.Worksheets("Trains")

Answer 2

to consider only not blank cells you can use SpecialCells() method of Range object and leave off any On Error GoTo statements, that should be used in very a few limited cases (one of which we'll see in a second)
furthermore you're using some uselessly long winded 'loops' to reference your relevant cells, for instance:
WS.Cells(, oCol).Offset(objCell.Row - 1, 0)
is equivalent to objCell itself!
and there are some more examples of that kind
finally, let's come to the workbooks open/close issue
you could:
use a Dictionary object to store the name of all opened workbooks so as to leave then open throughout your macro and close them all by the end of it
adopt a helper function that tries to set the wanted sheet (i.e. "Trains") in the wanted workbook (i.e. the one whose name is the current objCell value) and return False if not successful
all what above in this refactoring of your code:
Sub upONGOING_Train1bis()
Dim rFndCell As Range
Dim SH As Worksheet
Dim objCell As Range
Dim shtDict As New Scripting.Dictionary '<--| this is the dictionary that will store every opened workbook name as its 'keys'
Dim key As Variant
' Dim dec As String '<--| do you actually need it?
Application.ScreenUpdating = False
With ThisWorkbook.Sheets("Trains") '<-- reference your working worksheet
' dec = .Range("L1") '<-- what's this for? in any case take it out of for loops since its value doesn't depend on current loop variables
For Each objCell In .Range("L3:L100").SpecialCells(xlCellTypeConstants) '<--| loop through L3:L100 range not blank cells only
If TrySetWorksheet(objCell.Value, "Trains", SH) Then '<--|Try to set the wanted worksheet in the wanted workbook: if successful it'd retrun 'True' and leave you with 'SH' variable set to the wanted worksheet
shtDict(SH.Parent.Name) = shtDict(SH.Parent.Name) + 1
Set rFndCell = SH.Range("C3:C1100").Find(objCell.Offset(, 2).Value, LookIn:=xlValues, lookAt:=xlWhole) '<--| specify at least 'LookIn' and 'LookAt' parameters
If Not rFndCell Is Nothing Then rFndCell.Offset(, 10).Resize(, 6).Value = objCell.Offset(, 3).Resize(, 6).Value
End If
Next objCell
End With
For Each key In shtDict.Keys '<--|loop through opened workbooks dictionary keys
Workbooks(key).Close True '<--| close workbook whose name corresponds to current dictionary key
Next
Application.ScreenUpdating = True
End Sub
Function TrySetWorksheet(fileName As String, shtname As String, sht As Worksheet) As Boolean
Set sht = Nothing
On Error Resume Next
Set sht = Workbooks(Right(fileName, Len(fileName) - InStrRev(fileName, "\"))).Worksheets(shtname) '<--| try looking for an already open workbook with wanted name and wanted sheet
If sht Is Nothing Then Set sht = Workbooks.Open(fileName:=fileName).Worksheets(shtname) '<--| if not found then try opening the wanted workbook and set the wanted sheet in it
TrySetWorksheet = Not sht Is Nothing '<--| set the return value to the final result of attempts at locating the wanted sheet
End Function