Excel macro to copy data from same column of different files within a folder to a single Excel

[denniswong95]

Hi Everyone,

I have a folder containing thousands of files with similar data from sensor. (1 machine cycle will generate 1 csv file.)
The sensor data is stored in column B in every files.
I would like to copy all the column B data to a single file to do analysis.

The first thing when running the macro is to locate the folder.
Then the macro will run through all the files and copy the data stored in column B to a new worksheet.
The first column copied is to be placed in Column B of the new worksheet whereas subsequent data is to be placed in following column C, D E and etc accordingly until all files have been run through within the folder.

Anyone can help on this would be great.

Dennis

 

[mumps]

Place the macro in a new, blank workbook. Change the destination sheet name (in red) and the source sheet name (in blue) to suit your needs.

Sub CopyData()
    Application.ScreenUpdating = False
    Dim wsDest As Worksheet, wkbSource As Workbook, FolderName As String, bottomB As Long
    Set wsDest = ThisWorkbook.Sheets("Sheet1")
    With Application.FileDialog(msoFileDialogFolderPicker)
       .AllowMultiSelect = False
       .Show
       FolderName = .SelectedItems(1) & "\"
    End With
    ChDir FolderName
    strExtension = Dir("*.xlsx")
    Do While strExtension <> ""
        Set wkbSource = Workbooks.Open(FolderName & strExtension)
        With Sheets("Sheet1")
            bottomB = .Range("B" & .Rows.Count).End(xlUp).Row
            wsDest.Cells(1, wsDest.Columns.Count).End(xlToLeft).Offset(0, 1).Resize(bottomB).Value = .Range("B1:B" & bottomB).Value
        End With
        wkbSource.Close False
        strExtension = Dir
    Loop
    Application.ScreenUpdating = True
End Sub

 

[denniswong95]

Hi Mumps, I tried to copy it to a blank sheet but it does not work at all.
I suspect it is because my file format is in csv file instead of xlsx file.
Another thing is that for every file, the sheet name is auto generated therefore it is different for every file.
Please refer to the image uploaded for your reference.

 

[denniswong95]

Place the macro in a new, blank workbook. Change the destination sheet name (in red) and the source sheet name (in blue) to suit your needs.

Sub CopyData()
    Application.ScreenUpdating = False
    Dim wsDest As Worksheet, wkbSource As Workbook, FolderName As String, bottomB As Long
    Set wsDest = ThisWorkbook.Sheets("Sheet1")
    With Application.FileDialog(msoFileDialogFolderPicker)
       .AllowMultiSelect = False
       .Show
       FolderName = .SelectedItems(1) & "\"
    End With
    ChDir FolderName
    strExtension = Dir("*.xlsx")
    Do While strExtension <> ""
        Set wkbSource = Workbooks.Open(FolderName & strExtension)
        With Sheets("Sheet1")
            bottomB = .Range("B" & .Rows.Count).End(xlUp).Row
            wsDest.Cells(1, wsDest.Columns.Count).End(xlToLeft).Offset(0, 1).Resize(bottomB).Value = .Range("B1:B" & bottomB).Value
        End With
        wkbSource.Close False
        strExtension = Dir
    Loop
    Application.ScreenUpdating = True
End Sub

Thank you for your effort to write the macro code.

 

[mumps]

Another thing is that for every file, the sheet name is auto generated therefore it is different for every file.

Is the sheet always the first sheet in the workbook?

 

[denniswong95]

Is the sheet always the first sheet in the workbook?

Yes, the sheet is the only sheet in the csv file.

 

[mumps]

Try replacing this line of code:

Set wsDest = ThisWorkbook.Sheets("Sheet1")

with this line:

Set wsDest = ThisWorkbook.Sheets(1)