Is it possible to batch convert csv to xls using a macro? - csv

Question

I have a large amount of csv files that I need in .xls format. Is it possible to run a batch conversion with a macro or best done with another language?
I have used this code http://www.ozgrid.com/forum/showthread.php?t=71409&p=369573#post369573 to reference my directory but I'm not sure of the command to open each file and save them. Here's what I have:
Sub batchconvertcsvxls()
Dim wb As Workbook
Dim CSVCount As Integer
Dim myVar As String
myVar = FileList("C:\Documents and Settings\alistairw\My Documents\csvxlstest")
For i = LBound(myVar) To UBound(myVar)
With wb
Application.Workbooks.OpenText 'How do I reference the myvar string ?
wb.SaveAs '....
End With
Next
End Sub
Function FileList(fldr As String, Optional fltr As String = "*.*") As Variant
Dim sTemp As String, sHldr As String
If Right$(fldr, 1) <> "\" Then fldr = fldr & "\"
sTemp = Dir(fldr & fltr)
If sTemp = "" Then
FileList = Split("No files found", "|") 'ensures an array is returned
Exit Function
End If
Do
sHldr = Dir
If sHldr = "" Then Exit Do
sTemp = sTemp & "|" & sHldr
Loop
FileList = Split(sTemp, "|")
End Function
Edit: The files are .txt files formatted as csv

Answer 1

By combining the code given by Scott Holtzman and 'ExcelFreak', the conversion works quite well. The final code looks something like this:
Sub CSV_to_XLS()
Dim wb As Workbook
Dim strFile As String, strDir As String
strDir = "U:\path\"
strFile = Dir(strDir & "*.csv")
Do While strFile <> ""
Set wb = Workbooks.Open(Filename:=strDir & strFile, Local:=True)
wb.SaveAs Replace(wb.FullName, ".csv", ".xls"), 50 'UPDATE:
wb.Close True
Set wb = Nothing
strFile = Dir
Loop
End Sub
Opening the converted .xls file throws a warning everytime:
"The file you are trying to open, 'filename', is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?"
Clicking Yes then opens the .xls file.
Is there a way to get rid of this warning message? Excel throws a warning everytime the .xls file is opened.

Answer 2

In a lot less lines of code, this should get you what you want. However, I will say this may not be the fastest way to get it done, because you are opening, saving, and closing the workbook every time. I will look for a faster way, but I forget the method off the top of my head.
Sub batchconvertcsvxls()
Dim wb As Workbook
Dim strFile As String, strDir As String
strDir = "C:\"
strFile = Dir(strDir & "*.csv")
Do While strFile <> ""
Set wb = Workbooks.Open(strDir & strFile)
With wb
.SaveAs Replace(wb.FullName, ".csv", ".xls"), 50 'UPDATE:
.Close True
End With
Set wb = Nothing
Loop
End Sub
** UPDATE **
you need the proper fileformat enumeration for a .xls file. I think its 50, but you can check here Excel File Type Enumeration, if it's not.

Answer 3

The Code of Scott Holtzman nearly did it for me. I had to make two changes to get it to work:
He forgot to add the line that makes our loop continue with the next file. The last line before the Loop should read
strFile = Dir
The Workbooks.Open method did not read my CSV files as expected (the whole line ended up to be text in the first cell). When I added the parameter Local:=True it worked:
Set wb = Workbooks.Open(Filename:=strDir & strFile, Local:=True)

Answer 4

This works properly at least on Excel 2013. Using FileFormat:=xlExcel8 parameter instead of the filetype tag 50 creates files that open without security nags.
Sub CSV_to_XLS()
Dim wb As Workbook
Dim strFile As String, strDir As String
strDir = "C:\temp\"
strFile = Dir(strDir & "*.csv")
Do While strFile <> ""
Set wb = Workbooks.Open(Filename:=strDir & strFile, Local:=True)
wb.SaveAs Replace(wb.FullName, ".csv", ".xls"), FileFormat:=xlExcel8
wb.Close True
Set wb = Nothing
strFile = Dir
Loop
End Sub

Answer 5

This was a good question and I have found in the internet several answers. Just making very small changes (I couldn't edit any of the codes already published) I could make things work a bit better:
Sub CSV_to_XLSX()
Dim wb As Workbook
Dim strFile As String, strDir As String
strDir = "C:\Users\acer\OneDrive\Doctorado\Study 1\data\Retest Bkp\Day 1\Sart\"
strFile = Dir(strDir & "*.csv")
Do While strFile <> ""
Set wb = Workbooks.Open(Filename:=strDir & strFile, Local:=True)
With wb
.SaveAs Replace(wb.FullName, ".csv", ".xlsx"), 51
.Close True
End With
Set wb = Nothing
strFile = Dir
Loop
End Sub