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  Wednesday, August 05, 2009 – Permalink –

Large Text Files

Split between worksheets


While this problem is alleviated in Excel 2007 with its 1,048,576 rows by 16,348 columns, The old XL versions are still here.

Text files with a large number of records are better handled in a program like Access. Having said that, there can be times that these lists must be imported into Excel. If the file has over 65,536 records, the data will not fit on a single worksheet.

Here's a Microsoft Knowledge Base article with the macro code needed to bring oversized text data into Excel and split it into multiple worksheets:

Sub LargeFileImport()

'Dimension Variables
Dim ResultStr As String
Dim FileName As String
Dim FileNum As Integer
Dim Counter As Double
'Ask User for File's Name
FileName = InputBox("Please enter the Text File's name, e.g. test.txt")
'Check for no entry
If FileName = "" Then End
'Get Next Available File Handle Number
FileNum = FreeFile()
'Open Text File For Input
Open FileName For Input As #FileNum
'Turn Screen Updating Off
Application.ScreenUpdating = False
'Create A New WorkBook With One Worksheet In It
Workbooks.Add template:=xlWorksheet
'Set The Counter to 1
Counter = 1
'Loop Until the End Of File Is Reached
Do While Seek(FileNum) <= LOF(FileNum)
'Display Importing Row Number On Status Bar
Application.StatusBar = "Importing Row " & _
Counter & " of text file " & FileName
'Store One Line Of Text From File To Variable
Line Input #FileNum, ResultStr
'Store Variable Data Into Active Cell
If Left(ResultStr, 1) = "=" Then
ActiveCell.Value = "'" & ResultStr
Else
ActiveCell.Value = ResultStr
End If

'For Excel versions before Excel 97, change 65536 to 16384
If ActiveCell.Row = 65536 Then
'If On The Last Row Then Add A New Sheet
ActiveWorkbook.Sheets.Add
Else
'If Not The Last Row Then Go One Cell Down
ActiveCell.Offset(1, 0).Select
End If
'Increment the Counter By 1
Counter = Counter + 1
'Start Again At Top Of 'Do While' Statement
Loop
'Close The Open Text File
Close
'Remove Message From Status Bar
Application.StatusBar = False

End Sub


Importing Text Files Larger Than 16,384/65,536 Rows

Notice the code about 17 lines from the bottom of the macro.

'For xl97 and later change 16384 to 65536.

Also, after import, the data must be parsed. Use Data>Text to columns.




If you have not worked with macros before, Dave McRitchie has a tutorial:

Getting Started with Macros and User Defined Functions




See all Topics

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<Doug Klippert@ 3:13 AM

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