Importing Large Files In To Excel

Option Explicit
Option Compare Text
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' modImportBigFiles
' This module contains the ImportBigTextFile procedure and the IsFileOpen procedure.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

Sub ImportBigTextFile()
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' ImportBigTextFiles
' By Chip Pearson, chip@cpearson.com, www.cpearson.com
' This procedure is on http://www.cpearson.com/excel/ImportBigFiles.htm
' This procedure requires Excel 2000 or later.
'
' An Excel worksheet (2003 and earlier) is limited to 65,536 rows. You cannot increase this
' limit. Therefore, if you use Excel's tools to import a text or csv file with more
' than 65,536 rows of data, Excel will only import the first 65,536 records (or fewer,
' depending on the row in which you start the import). This procedure may be used to import a text
' or CSV file of any number of rows. It will begin the import by placing the imported data on the sheet
' named in C_START_SHEET_NAME starting in row C_START_ROW_FIRST_PAGE.
'
' Note that the import process always writes records to the ActiveWorkbook, which may or may not
' be the same workbook that contains this code. Ensure that the proper workbook is active
' prior to running the import process.
'
' RowNdx is the current row number where the input record will be placed. When any one or more
' of the following are true:
' RowNdx > Rows.Count
' RowNdx > LastRowForInput
' RowsThisSheet > MaxRowsPerSheet
' the procedure will create a new worksheet immediately following the current worksheet and
' name it
' C_SHEET_NAME_PREFIX & Format(SheetNumber, "0")
'
' The procedure will optionally split the input data into multiple columns, delimited by a
' character specified in the SplitChar variable.
'
' The following constants and variable determine how the procedure handles data and new worksheets:
'
' C_START_ROW_FIRST_PAGE is the row number on the first worksheet (C_START_SHEET_NAME)
' where the data should be placed. This is used if you have
' header rows that you want to preserve.
'
' C_START_ROW_LATER_PAGES is the row number on subsequent (sheet 2, 3, etc) that the
' data should be started.
'
' C_START_SHEET_NAME is the name of an existing worksheet. The imported data will
' start by filling this sheet before creating a new worksheet.
'
' C_START_COLUMN is the column in which the data is placed. If SplitChar is
' vbNullString, the entire line of input data will be placed
' in this column. If SplitChar is not vbNullString, the input
' data is split into an array using SplitChar as a delimiter,
' and each data element will be put in its own column, starting
' with C_START_COLUMN.
'
' C_TEMPLATE_SHEET_NAME is the name of an existing worksheet that is used as the
' template for each new sheet created by the function. This
' must NOT be the same as C_START_SHEET_NAME, since copying
' C_START_SHEET_NAME would copy all of the imported (so far)
' data to the new sheet. If you don't want to use a template
' sheet, set this constant to vbNullString.
'
' C_UPDATE_STATUSBAR_EVERY_N_RECORDS
' is the number of records after which the a message will
' be displayed in the StatusBar. Set this value to <= 0 if you
' do not want any StatusBar updates. A typical value for this
' constant is 1000.
'
' C_STATUSBAR_TEXT is the text to be displayed in the StatusBar. The current record
' count will be appnded to this text. This value is not used
' if C_UPDATE_STATUSBAR_EVERY_N_RECORDS is <= 0. The string
' value in this constant should include a trailing space. A
' typical value for this constant is "Processing Record: "
'
' C_SHEET_NAME_PREFIX is a string value which will be used for naming newly created
' worksheets. This constant must have <= 28 characters, which
' leaves the procedure three characters for the numeric suffix.
' This allows for importing 65,404,928 rows. If there are more
' rows, the proceudre will import them, but the worksheet names
' may not be named properly. They will, however, be in the proper
' sequence.
'
' c If this constant is TRUE, quotes will be removed from
' the imorted elements. E.g., data not "data".
'
' LastRowForInput is the last row number on a worksheet that the imported data
' should be placed. Set this to either <= 0 or to Rows.Count
' to import data to the last row of the worksheet.
'
' MaxRowsPerSheet is the maximum number of rows to import on to a single worksheet.
' Set this to <= 0 or Rows.Count to import to the last row
' of a worksheet. While the procedure can properely handle values
' in both LastRowForInput and MaxRowsPerSheet, you will most likely
' set both to <=0 or set one to <= 0 and the other to its appropriate
' value. Typically, both variables will not have non-zero values.
'
' SplitChar is the character which delimits the data fields in the input data.
' If this character is vbNullString, the entire input line of data
' will be placed in C_START_COLUMN. If SplitChar is not vbNullString,
' it is truncated to 1 character (the left-most character) and then used
' in Split function to split the input data into an array, delimited by SplitChar.
' Each element of the array is put into its own column, starting with
' C_START_COLUMN and proceeding to the right. SplitChar is typically set
' to a comma, semicolon, or vbTab, but it can be any character.
'
' The procedure saves the following Application properties, then turns them off. It will restore the saved
' values at the end of the procedure.
' Calculation
' ScreenUpdating
' DisplayAlerts
' EnableEvents
'
'-------------------------
' Possible Data Loss
'-------------------------
' It is possible that some data loss may occur if the function is splitting the input data into multiple columns.
' If the number of data elements in the input record plus the value of StartColumn is greater than the number
' of Columns in the worksheet, data elements that would go past the right-most column of the worksheet are not imported.
' The number of these truncated records is stored in the TruncatedCount variable and is displayed at the end
' of the procedure.
'
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

' data starts on this row on the first sheet
Const C_START_ROW_FIRST_PAGE = 3

' data starts on this row for all subsequent sheets
Const C_START_ROW_LATER_PAGES = 2

' worksheet name where data should start. This sheet must exist.
Const C_START_SHEET_NAME = "Sheet1"

' what column do we start placing the data
Const C_START_COLUMN = 4

' newly created worksheets will be named C_SHEET_NAME_PREFIX & Format(SheetNum,"0")
Const C_SHEET_NAME_PREFIX = "DataImport"

' newly created worksheets will be based on this template sheet. set to vbNullString if
' you don't want to use a template sheet and use a blank sheet instead.
Const C_TEMPLATE_SHEET_NAME = vbNullString

' update the Application.StatusBar every C_UPDATE_STATUSBAR_EVERY_N_RECORDS records.
' set this to 0 if you don't want status bar messages.
Const C_UPDATE_STATUSBAR_EVERY_N_RECORDS = 1000

' this is the message to be displayed in the status bar. The number of records
' read so far will be appended to this value.
Const C_STATUSBAR_TEXT = "Processing Record: "

' if True, quotes surrounding each element will be removed. If False,
' any quotes in the input data are preserved.
Const C_REMOVE_QUOTES = False


Dim RowNdx As Long ' Current RowNumber
Dim Colndx As Long ' Current Column
Dim FName As Variant ' Input file name
Dim FNum As Integer ' Filenumber returned by FreeFile
Dim WS As Worksheet ' Worksheet on which the data should be placed
Dim InputLine As String ' The entire line of text read from the input file
Dim Arr As Variant ' Used with Split to break InputLine into an array,
' delimited by SplitChart
Dim SplitChar As String ' The character used by Split. This character delimits
' the input data fields in InputLine. Typically, this
' character will be a comma, semicolon, or vbTab.
' If this character is vbNullString, the input data
' won't be split, and the entire InputLine will be
' put in column C_START_COLUMN
Dim SheetNumber As Long ' Increments for each worksheet we populate with data
Dim SaveCalc As XlCalculation ' Caller's Calculation mode.
Dim SaveScreenUpdating As Boolean ' Caller's ScreenUpdating mode
Dim SaveDisplayAlerts As Boolean ' Caller's DisplayAlerts property
Dim SaveEnableEvents As Boolean ' Caller's EnableEvents property
Dim InputCounter As Long ' Counter of all records imported
Dim LastRowForInput As Long ' Indicate the last row on the worksheet than
' input data should be used. Set this to a value <= Rows.Count.
Dim MaxRowsPerSheet As Long ' The maximumn number of rows to import on each sheet.
' Set this to <= 0 if you don't want to use this parameter.
Dim RowsThisSheet As Long ' Keeps track of the rows imported on to the current sheet.
Dim TruncatedCount As Long ' Counts the number of records whose input was truncated because
' it would have gone past the last column of the worksheet.

SheetNumber = 1

'''''''''''''''''''''''''''''''''''''''''''''
' Ensure we have an active workbook.
'''''''''''''''''''''''''''''''''''''''''''''
If Application.ActiveWorkbook Is Nothing Then
MsgBox "There is no active workbook."
Exit Sub
End If

''''''''''''''''''''''''''''''''''''''''''''''
' Set what character we're going to
' use to split apart the input line. The
' input line will be SPLIT on this character,
' and each text field will go into its own
' column. Data will be separated by
' SplitChar into multiple columns, starting
' on column C_START_COLUMN. If SplitChar is
' vbNullString, the entire input line is
' placed in C_START_COLUMN. SplitChar must
' be a single character. It is typically
' a comma, semicolon, or vbTab, but it can
' be any character. If SplitChar is set to
' more than one character, it is truncated
' to a single (the left-most) character.
' When placing data elements in separate
' columns, it is possible that the number of
' imported elements would extend past the
' last column of the worksheet. The count
' of records whose input was truncated because
' it would have gone past the last column
' of the worksheet is stored in the TruncatedCount
' variable. The value of this variable is
' displayed at the end of the procedure.
'
''''''''''''''''''''''''''''''''''''''''''''''
SplitChar = vbTab

''''''''''''''''''''''''''''''''''''''''''''''
' Set the maximum number of data input rows
' to place on each worksheet. Set this
' value to <= 0 or to Rows.Count to fill
' the entire worksheet.
''''''''''''''''''''''''''''''''''''''''''''''
MaxRowsPerSheet = 0&

'''''''''''''''''''''''''''''''''''''''''''''
' Set the LastRowForInput value. This when
' this row number is reached, a new worksheet
' will be created. Set this to 0 or
' WS.Rows.Count to fill the entire worksheet.
'''''''''''''''''''''''''''''''''''''''''''''
LastRowForInput = ActiveWorkbook.Worksheets(1).Rows.Count

''''''''''''''''''''''''''''''''''''''''''''''''''
' Ensure that C_SHEET_NAME_PREFIX is <= 29
' characters. This leaves us two characters for
' the numeric suffix, or 99 added sheets. If
' more sheets are needed, they will be created,
' and the data will be imported, but the sheets
' will have the default Excel-generated name, not
' the C_SHEET_NAME_PREFIX name. They will be in
' the correct order.
''''''''''''''''''''''''''''''''''''''''''''''''''
If (Len(C_SHEET_NAME_PREFIX) <> 29) Then
MsgBox "The value of C_SHEET_NAME_PREFIX must have between 1 and 29 characters." & vbCrLf & _
"The current length of C_SHEET_NAME_PREFIX is " & CStr(Len(C_SHEET_NAME_PREFIX)) & " characters."
Exit Sub
End If

'''''''''''''''''''''''''''''''''''''''''''''''''''
' Ensure C_START_SHEET_NAME refers to an existing
' sheet.
'''''''''''''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
Err.Clear
Set WS = ActiveWorkbook.Worksheets(C_START_SHEET_NAME)
If Err.Number <> 0 Then
MsgBox "The sheet named in C_START_SHEET_NAME (" & C_START_SHEET_NAME & ") does not exist" & vbCrLf & _
"or is not a worksheet (e.g., it is a chart sheet).", vbOKOnly
Exit Sub
End If

''''''''''''''''''''''''''''''''''''''''''''''''''
' Ensure that if C_TEMPLATE_SHEET_NAME is not
' vbNullString, it names an existing sheet, and
' that it is not equal to C_START_SHEET_NAME.
''''''''''''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
Err.Clear
If C_TEMPLATE_SHEET_NAME <> vbNullString Then
Set WS = ActiveWorkbook.Worksheets(C_TEMPLATE_SHEET_NAME)
If Err.Number <> 0 Then
MsgBox "The template sheet '" & C_TEMPLATE_SHEET_NAME & "' does not exist or is not a worksheet."
Exit Sub
End If
''''''''''''''''''''''''''''''''''''''''''''''''''
' Ensure that C_START_SHEET_NAME does not equal
' C_TEMPLATE_SHEET_NAME
''''''''''''''''''''''''''''''''''''''''''''''''''
If C_TEMPLATE_SHEET_NAME = C_START_SHEET_NAME Then
MsgBox "The C_TEMPLATE_SHEET_NAME is equal to the C_START_SHEET_NAME." & vbCrLf & _
"This is not allowed."
Exit Sub
End If
End If
On Error GoTo 0

''''''''''''''''''''''''''''''''''''''''''''''''''''
' We may have changed the worksheet referenced by WS
' when testing if C_TEMPLATE_SHEET_NAME exists. Reset
' WS back to C_START_SHEET_NAME.
''''''''''''''''''''''''''''''''''''''''''''''''''''
Set WS = ActiveWorkbook.Worksheets(C_START_SHEET_NAME)

''''''''''''''''''''''''''''''''''''''''''''''''''
' Ensure that none of the following are protected:
' C_START_SHEET_NAME
' C_TEMPLATE_SHEET_NAME
' ActiveWorkbook
''''''''''''''''''''''''''''''''''''''''''''''''''
If WS.ProtectContents = True Then
MsgBox "The worksheet '" & WS.Name & "' is protected."
Exit Sub
End If

If C_TEMPLATE_SHEET_NAME <> vbNullString Then
If ActiveWorkbook.Worksheets(C_TEMPLATE_SHEET_NAME).ProtectContents = True Then
MsgBox "The Template Sheet (" & C_TEMPLATE_SHEET_NAME & ") is protected."
Exit Sub
End If
End If

If ActiveWorkbook.ProtectStructure = True Then
MsgBox "The ActiveWorkbook is protected."
Exit Sub
End If



''''''''''''''''''''''''''''''''''''''''''''''
' Prompt the user for a TXT or CSV file
''''''''''''''''''''''''''''''''''''''''''''''
FName = Application.GetOpenFilename(FileFilter:="Text Files (*.txt),*.txt," & _
"CSV Files (*.csv),*.csv")
If FName = False Then
' user clicked CANCEL. get out now.
Exit Sub
End If

''''''''''''''''''''''''''''''''''''''''''''''
' Set our starting destination worksheet.
' Error and exit if sheet does not exist
''''''''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
Set WS = ActiveWorkbook.Worksheets(C_START_SHEET_NAME)
If WS Is Nothing Then
MsgBox "The worksheet specified in C_START_SHEET_NAME (" & _
C_START_SHEET_NAME & ") does not exist."
Exit Sub
End If
On Error GoTo 0

'''''''''''''''''''''''''''''''''''''''''''''
' See if the file FName is open by another
' process. If it is, exit the procedure.
'''''''''''''''''''''''''''''''''''''''''''''
If IsFileOpen(FileName:=CVar(FName)) = True Then
MsgBox "The file '" & FName & "' is open by another process."
Exit Sub
End If

''''''''''''''''''''''''''''''''''''''''''''''
' Save the calculation mode and the ScreenUpdating
' mode. Set calculation to manual and turn off
' ScreenUpdating. This will greatly improve
' the performance of the code.
''''''''''''''''''''''''''''''''''''''''''''''
SaveCalc = Application.Calculation
SaveDisplayAlerts = Application.DisplayAlerts
SaveScreenUpdating = Application.ScreenUpdating
SaveEnableEvents = Application.EnableEvents

Application.DisplayAlerts = False
Application.Calculation = xlCalculationManual
Application.ScreenUpdating = False
Application.EnableEvents = False
''''''''''''''''''''''''''''''''''''''''''''''
' Get a file number and open the file
''''''''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
FNum = FreeFile
Err.Clear
Open FName For Input Access Read As #FNum
If Err.Number <> 0 Then
'''''''''''''''''''''''''''''''''''''''''
' If an error occurred, alert the user,
' restore application settings, and
' exit the procedure.
'''''''''''''''''''''''''''''''''''''''''
MsgBox "An error occurred opening file '" & FName & "'." & vbCrLf & _
"Error Number: " & CStr(Err.Number) & vbCrLf & _
"Description: " & Err.Description
Close #FNum
Application.Calculation = SaveCalc
Application.ScreenUpdating = SaveScreenUpdating
Application.DisplayAlerts = SaveDisplayAlerts
Application.EnableEvents = SaveEnableEvents
Exit Sub
End If
On Error GoTo 0

''''''''''''''''''''''''''''''''''''''''''''''
' Initialize the RowNd index variable to
' C_START_ROW_FIRST_PAGE. This constant
' is used to preserve any header rows that
' may be present.
''''''''''''''''''''''''''''''''''''''''''''''
RowNdx = C_START_ROW_FIRST_PAGE

''''''''''''''''''''''''''''''''''''''''''''''
' Ensure that SplitChar is a single character.
''''''''''''''''''''''''''''''''''''''''''''''
If SplitChar <> vbNullString Then
SplitChar = Left(SplitChar, 1)
End If
''''''''''''''''''''''''''''''''''''''''''''''
' If LastRowForInput is <= 0, then set it
' to Rows.Count
''''''''''''''''''''''''''''''''''''''''''''''
If LastRowForInput <= 0 Then
LastRowForInput = WS.Rows.Count
End If

''''''''''''''''''''''''''''''''''''''''
' If MaxRowsPerSheet is <= 0, use Rows.Count
''''''''''''''''''''''''''''''''''''''''
If MaxRowsPerSheet <= 0 Then
MaxRowsPerSheet = Rows.Count
End If


''''''''''''''''''''''''''''''''''''''''''''''
' Loop until we hit the end of the file.
''''''''''''''''''''''''''''''''''''''''''''''
On Error GoTo 0
Do Until EOF(FNum)
''''''''''''''''''''''''''''''''''''''''''''''
' Get the next line of data from the file
''''''''''''''''''''''''''''''''''''''''''''''
Line Input #FNum, InputLine
''''''''''''''''''''''''''''''''''''''''''
' Increment counters.
''''''''''''''''''''''''''''''''''''''''''
InputCounter = InputCounter + 1
RowsThisSheet = RowsThisSheet + 1
''''''''''''''''''''''''''''''''''''''''''
' Determine whether to update the StatusBar.
''''''''''''''''''''''''''''''''''''''''''
If C_UPDATE_STATUSBAR_EVERY_N_RECORDS > 0 Then
If InputCounter Mod C_UPDATE_STATUSBAR_EVERY_N_RECORDS = 0 Then
Application.StatusBar = C_STATUSBAR_TEXT & _
Format(InputCounter, "#,##0")
End If
End If
If SplitChar = vbNullString Then
''''''''''''''''''''''''''''''''''''''
' We're not spliting up the input. Put
' the entire line in column C_START_COLUMN
''''''''''''''''''''''''''''''''''''''
WS.Cells(RowNdx, C_START_COLUMN).Value = InputLine
Else
''''''''''''''''''''''''''''''''''''''''
' SplitChar is not vbNullString.
' We're spliting up the input into columns.
' Use Split to get an array of the items
' in InputLine, delimited by SplitChar,
' and then loop through the Arr array, putting
' each element in its own column
''''''''''''''''''''''''''''''''''''''''
Arr = Split(expression:=InputLine, delimiter:=SplitChar, limit:=-1, compare:=vbTextCompare)
For Colndx = LBound(Arr) To UBound(Arr)
'''''''''''''''''''''''''''''''''''''''''''''''''''''
' Ensure we don't try to write past the last column
' of the worksheet. If we reach the last column,
' exit out of the For loop.
'''''''''''''''''''''''''''''''''''''''''''''''''''''
If Colndx + C_START_COLUMN <= WS.Columns.Count Then
If C_REMOVE_QUOTES = True Then
WS.Cells(RowNdx, Colndx + C_START_COLUMN).Value = Replace(Arr(Colndx), Chr(34), vbNullString)
Else
WS.Cells(RowNdx, Colndx + C_START_COLUMN).Value = Arr(Colndx)
End If
Else
TruncatedCount = TruncatedCount + 1
Exit For
End If
Next Colndx
End If ' SplitChar = vbNullString


'''''''''''''''''''''''''''''''''''''''
' Increment the RowNdx index variable.
' If it is greater than either of the following:
' Rows.Count
' LastRowForInput
' or if RowsThisSheet is > MaxRowsPerSheet
' then create and name a new worksheet and
' reset the RowNdx index variable to
' C_START_ROW_LATER_PAGES.
''''''''''''''''''''''''''''''''''''''''
RowNdx = RowNdx + 1
If (RowNdx > Rows.Count) Or (RowNdx > LastRowForInput) Or (RowsThisSheet > MaxRowsPerSheet) Then
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' We're past the end of the worksheet or past the row
' specified in LastRowForInput or the rows used on this
' worksheet is greater than MaxRowsPerSheet.
'
' Increment the SheetNumber index and either create a
' new sheet (if C_TEMPLATE_SHEET_NAME is vbNullString) or
' copy the C_TEMPLATE_SHEET_NAME worksheet
' immediately after the current sheet, and name it
' C_SHEET_NAME_PREFIX & Format(SheetNumber, "0")
' Reset the RowNdx value to C_START_ROW_LATER_PAGE
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''
SheetNumber = SheetNumber + 1
If C_TEMPLATE_SHEET_NAME = vbNullString Then
Set WS = ActiveWorkbook.Worksheets.Add(after:=WS)
Else
ActiveWorkbook.Worksheets(C_TEMPLATE_SHEET_NAME).Copy after:=WS
Set WS = ActiveWorkbook.ActiveSheet
End If
On Error Resume Next
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' ignore the error that might arise if there is already a
' sheet named
' C_SHEET_NAME_PREFIX & Format(SheetNumber, "0")
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
WS.Name = C_SHEET_NAME_PREFIX & Format(SheetNumber, "0")
On Error GoTo 0

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' Reset out counters.
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''
RowNdx = C_START_ROW_LATER_PAGES
RowsThisSheet = 0
End If
''''''''''''''''''''''''''''''''''''''''''''''
' end of loop
''''''''''''''''''''''''''''''''''''''''''''''
Loop

''''''''''''''''''''''''''''''''''''''''''''''
' Close the input file and restore the saved
' application settings.
''''''''''''''''''''''''''''''''''''''''''''''
Close FNum
Application.Calculation = SaveCalc
Application.ScreenUpdating = SaveScreenUpdating
Application.DisplayAlerts = SaveDisplayAlerts
Application.EnableEvents = SaveEnableEvents
Application.StatusBar = False

''''''''''''''''''''''''''''''''''''''''''''''
' MsgBox to the user indicating we're done.
''''''''''''''''''''''''''''''''''''''''''''''
MsgBox "Import operation from file '" & FName & "' complete." & vbCrLf & _
"Records Imported: " & Format(InputCounter, "#,##0") & vbCrLf & _
"Records Truncated: " & Format(TruncatedCount, "#,##0"), _
vbOKOnly, "Import Text File"

''''''''''''''''''''''
' END OF PROCEDURE
''''''''''''''''''''''
End Sub



Private Function IsFileOpen(FileName As String) As Boolean
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' IsFileOpen
' This function determines whether a file is open by any program. Returns TRUE or FALSE.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Dim FileNum As Integer
Dim ErrNum As Long

Const C_ERR_NO_ERROR = 0&
Const C_ERR_PERMISSION_DENIED = 70&

On Error Resume Next

''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' If we were passed in an empty string, there is no file to test so return False.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
If FileName = vbNullString Then
IsFileOpen = False
Exit Function
End If

''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' If the file doesn't exist, it certainly isn't open. This test will also
' take care of the case of a syntactically invalid file name. A syntactically
' invalid file name will raise an error 52, but Dir will return vbNullString.
' It is up to the calling procedure to ensure that the filename is syntactically
' valid.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
On Error Resume Next
If Dir(FileName, vbNormal + vbArchive + vbSystem + vbHidden) = vbNullString Then
IsFileOpen = False
Exit Function
End If

FileNum = FreeFile() ' Get a free file number.
''''''''''''''''''''''''''''''''''''''''''''
' Attempt to open the file and lock it.
''''''''''''''''''''''''''''''''''''''''''''
Err.Clear
Open FileName For Input Lock Read As #FileNum
''''''''''''''''''''''''''''''''''''''''''''
' Save the error number, since it will get
' reset by the Close operation.
''''''''''''''''''''''''''''''''''''''''''''
ErrNum = Err.Number
Close FileNum
''''''''''''''''''''''''''''''''''''
' Check to see which error occurred.
''''''''''''''''''''''''''''''''''''
Select Case ErrNum
Case C_ERR_NO_ERROR
'''''''''''''''''''''''''''''''''
' No error. The file is not open.
'''''''''''''''''''''''''''''''''
IsFileOpen = False

Case C_ERR_PERMISSION_DENIED
'''''''''''''''''''''''''''''''''
' Permission denied. The file is
' open.
'''''''''''''''''''''''''''''''''
IsFileOpen = True

Case Else
'''''''''''''''''''''''''''''''''
' We should never get here, but
' if we do, return True to be safe.
'''''''''''''''''''''''''''''''''
IsFileOpen = True

End Select

End Function

code to unprotect excel

Sub PasswordBreaker()

'Breaks worksheet password protection.

Dim i As Integer, j As Integer, k As Integer

Dim l As Integer, m As Integer, n As Integer

Dim i1 As Integer, i2 As Integer, i3 As Integer

Dim i4 As Integer, i5 As Integer, i6 As Integer

On Error Resume Next

For i = 65 To 66: For j = 65 To 66: For k = 65 To 66

For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66

For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66

For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126

ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & _

Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _

Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)

If ActiveSheet.ProtectContents = False Then

MsgBox "One usable password is " & Chr(i) & Chr(j) & _

Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & _

Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)

Exit Sub

End If

Next: Next: Next: Next: Next: Next

Next: Next: Next: Next: Next: Next

End Sub

vb6 - Zipping and Unzipping using Shell32

This one requires a reference to shell32.dll.

Option Explicit

'//source was in C# from urls:
'//http://www.codeproject.com/csharp/CompressWithWinShellAPICS.asp
'//http://www.codeproject.com/csharp/DecompressWinShellAPICS.asp

'//set reference to "Microsoft Shell Controls and Automation"


'http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1090552&SiteID=1
'Be aware when using the shell automation interface to unzip files as it
'leaves copies of the zip files in the temp directory (defined by %TEMP%).
'Folders named "Temporary Directory X for demo.zip" are generated where X
'is a sequential number from 1 - 99. When it reaches 99 you will then get
'a error dialog saying "The file exists" and it will not continue.
'I 've no idea why Windows doesn't clean up after itself when unzipping files,
'but it is most annoying...


'//CopyHere options
'0 Default. No options specified.
'4 Do not display a progress dialog box.
'8 Rename the target file if a file exists at the target location with the same name.
'16 Click "Yes to All" in any dialog box displayed.
'64 Preserve undo information, if possible.
'128 Perform the operation only if a wildcard file name (*.*) is specified.
'256 Display a progress dialog box but do not show the file names.
'512 Do not confirm the creation of a new directory if the operation requires one to be created.
'1024 Do not display a user interface if an error occurs.
'4096 Disable recursion.
'9182 Do not copy connected files as a group. Only copy the specified files.

Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)

Private Sub Zip_Activity(Action As String, sFileSource As String, sFileDest As String)

'//copies contents of folder to zip file
Dim ShellClass As Shell32.Shell
Dim Filesource As Shell32.Folder
Dim Filedest As Shell32.Folder
Dim Folderitems As Shell32.Folderitems

If sFileSource = "" Or sFileDest = "" Then GoTo EH

Select Case UCase$(Action)

Case "ZIPFILE"

If Right$(UCase$(sFileDest), 4) <> ".ZIP" Then
sFileDest = sFileDest & ".ZIP"
End If

If Not Create_Empty_Zip(sFileDest) Then
GoTo EH
End If

Set ShellClass = New Shell32.Shell
Set Filedest = ShellClass.NameSpace(sFileDest)

Call Filedest.CopyHere(sFileSource, 20)

Case "ZIPFOLDER"

If Right$(UCase$(sFileDest), 4) <> ".ZIP" Then
sFileDest = sFileDest & ".ZIP"
End If

If Not Create_Empty_Zip(sFileDest) Then
GoTo EH
End If

'//Copy a folder and its contents into the newly created zip file
Set ShellClass = New Shell32.Shell
Set Filesource = ShellClass.NameSpace(sFileSource)
Set Filedest = ShellClass.NameSpace(sFileDest)
Set Folderitems = Filesource.Items

Call Filedest.CopyHere(Folderitems, 20)

Case "UNZIP"

If Right$(UCase$(sFileSource), 4) <> ".ZIP" Then
sFileSource = sFileSource & ".ZIP"
End If

Set ShellClass = New Shell32.Shell
Set Filesource = ShellClass.NameSpace(sFileSource) '//should be zip file
Set Filedest = ShellClass.NameSpace(sFileDest) '//should be directory
Set Folderitems = Filesource.Items '//copy zipped items to directory

Call Filedest.CopyHere(Folderitems, 20)

Case Else

End Select

'//Ziping a file using the Windows Shell API creates another thread where the zipping is executed.
'//This means that it is possible that this console app would end before the zipping thread
'//starts to execute which would cause the zip to never occur and you will end up with just
'//an empty zip file. So wait a second and give the zipping thread time to get started.

Call Sleep(1000)

EH:

If Err.Number <> 0 Then
MsgBox Err.Description, vbExclamation, "error"
End If

Set ShellClass = Nothing
Set Filesource = Nothing
Set Filedest = Nothing
Set Folderitems = Nothing

End Sub

Private Function Create_Empty_Zip(sFileName As String) As Boolean

Dim EmptyZip() As Byte
Dim J As Integer

On Error GoTo EH
Create_Empty_Zip = False

'//create zip header
ReDim EmptyZip(1 To 22)

EmptyZip(1) = 80
EmptyZip(2) = 75
EmptyZip(3) = 5
EmptyZip(4) = 6

For J = 5 To UBound(EmptyZip)
EmptyZip(J) = 0
Next

'//create empty zip file with header
Open sFileName For Binary Access Write As #1

For J = LBound(EmptyZip) To UBound(EmptyZip)
Put #1, , EmptyZip(J)
Next

Close #1

Create_Empty_Zip = True

EH:

If Err.Number <> 0 Then
MsgBox Err.Description, vbExclamation, "Error"
End If

End Function

How t o create password protected zip file using vb6.0

Dim ret As Long
ret = Shell("c:\program files\winrar\rar a -ap c:\test.rar -ptest c:\answer.txt c:\test.xml")

Upload File Using FTP--VB6

1. Select Tools | References....
2. Select Microsoft Internet Transfer Control from the available references.
   1. If it is not available, click the Browse... button. You will be presented with the Add Reference dialog box.
   2. Locate and select MSINET.OCX. This file is usually present in the System folder.
   3. Click Open to dismiss the Add Reference dialog box.
3. Click OK.

Function UploadFile(ByVal HostName As String, _
ByVal UserName As String, _
ByVal Password As String, _
ByVal LocalFileName As String, _
ByVal RemoteFileName As String) As Boolean

Dim FTP As Inet

Set FTP = New Inet
With FTP
.Protocol = icFTP
.RemoteHost = HostName
.UserName = UserName
.Password = Password
.Execute .URL, "Put " + LocalFileName + " " + RemoteFileName
Do While .StillExecuting
DoEvents
Loop
UploadFile = (.ResponseCode = 0)
End With
Set FTP = Nothing
End Function

query to find keyword in a column for a table

declare @TableName nvarchar(max)
declare @ColumnName nvarchar(max)
declare @SearchStr2 nvarchar(max)
declare @SearchStr nvarchar(max)
set @TableName='alphaitems_new'
set @ColumnName='iteminfo'
set @SearchStr='FCF Yld'
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')
EXEC
(
'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630)
FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
)

Indian rupee format in crystal reports

numbervar RmVal:=0;
numbervar Amt:=0;
numbervar pAmt:=0;
stringvar InWords :="Rupees ";

Amt := 2512000 ;

if Amt > 10000000 then RmVal := truncate(Amt/10000000);
if Amt = 10000000 then RmVal := 1;

if RmVal = 1 then
InWords := InWords + " " + towords(RmVal,0) + " crore"
else
if RmVal > 1 then InWords := InWords + " " + towords(RmVal,0) + " crores";

Amt := Amt - Rmval * 10000000;

if Amt > 100000 then RmVal := truncate(Amt/100000);
if Amt = 100000 then RmVal := 1;

if RmVal = 1 then
InWords := InWords + " " + towords(RmVal,0) + " lakhs"
Else
If RmVal > 1 then InWords := InWords + " " + ToWords(RmVal,0) + "Lakhs";

Amt := Amt - Rmval * 100000;

if Amt > 0 then InWords := InWords + " " + towords(truncate(Amt),0);

pAmt := (Amt - truncate(Amt)) * 100;

if pAmt > 0 then
InWords := InWords + " and " + towords(pAmt,0) + " paisa only"
else
InWords := InWords + " only";

UPPERCASE(InWords)