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HOW TO COMPRESS A FOLDER USING VB

Posted on 2009-04-14
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1,572 Views
Last Modified: 2012-05-06
HOW TO COMPRESS A FOLDER USING VB
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Question by:megavannan
4 Comments
 
LVL 9

Accepted Solution

by:
asawatzki earned 250 total points
ID: 24137971
Here's a simple vbscript using WMI:

strComputer = "."
'Change strFolder to the folder path you want compressed.
strFolder = "C:\SomeFolder"

set objWMI = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
set objFolder = objWMI.Get("Win32_Directory='" & strFolder & "'")
objFolder.Compress
set objFolder = nothing
set objWMI = nothing
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LVL 39

Expert Comment

by:abel
ID: 24138126
Looks as if this question is doubled. This seems the original question. The other question is: http://www.experts-exchange.com/Programming/Languages/.NET/Visual_Studio_.NET_2005/Q_24320391.html
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LVL 14

Assisted Solution

by:yehudaha
yehudaha earned 250 total points
ID: 24138128
if you ment compress by zip it

edit this line as you need, the first the folder to zip the second the zip path and file name

strSourceFolder = "C:\temp"
strDestinationZip = "C:\test.zip"

 
strSourceFolder = "C:\PowerTab"
strDestinationZip = "C:\test.zip"
 
arrResult = ZipFolder(strSourceFolder,strDestinationZip)
If arrResult(0) = 0 Then
    If arrResult(1) = 1 Then
        WScript.Echo "Done; 1 empty subfolder was skipped."
    Else
        WScript.Echo "Done; " & arrResult(1) & " empty subfolders were skipped."
    End If
Else
    WScript.Echo "ERROR " & Join( arrResult, vbCrLf )
End If
 
 
Function ZipFolder(myFolder,myZipFile)
' This function recursively ZIPs an entire folder into a single ZIP file,
' using only Windows' built-in ("native") objects and methods.
'
' Last Modified:
' October 12, 2008
'
' Arguments:
' myFolder   [string]  the fully qualified path of the folder to be ZIPped
' myZipFile  [string]  the fully qualified path of the target ZIP file
'
' Return Code:
' An array with the error number at index 0, the source at index 1, and
' the description at index 2. If the error number equals 0, all went well
' and at index 1 the number of skipped empty subfolders can be found.
'
' Notes:
' [1] If the specified ZIP file exists, it will be overwritten
'     (NOT APPENDED) without notice!
' [2] Empty subfolders in the specified source folder will be skipped
'     without notice; lower level subfolders WILL be added, wether
'     empty or not.
'
' Based on a VBA script (http://www.rondebruin.nl/windowsxpzip.htm)
' by Ron de Bruin, http://www.rondebruin.nl
'
' (Re)written by Rob van der Woude
' http://www.robvanderwoude.com
 
    ' Standard housekeeping
    Dim intSkipped, intSrcItems
    Dim objApp, objFolder, objFSO, objItem, objTxt
    Dim strSkipped
 
    Const ForWriting = 2
 
    intSkipped = 0
 
    ' Make sure the path ends with a backslash
    If Right( myFolder, 1 ) <> "\" Then
        myFolder = myFolder & "\"
    End If
 
    ' Use custom error handling
    On Error Resume Next
 
    ' Create an empty ZIP file
    Set objFSO = CreateObject( "Scripting.FileSystemObject" )
    Set objTxt = objFSO.OpenTextFile( myZipFile, ForWriting, True )
    objTxt.Write "PK" & Chr(5) & Chr(6) & String( 18, Chr(0) )
    objTxt.Close
    Set objTxt = Nothing
 
    ' Abort on errors
    If Err Then
        ZipFolder = Array( Err.Number, Err.Source, Err.Description )
        Err.Clear
        On Error Goto 0
        Exit Function
    End If
    
    ' Create a Shell object
    Set objApp = CreateObject( "Shell.Application" )
 
    ' Copy the files to the compressed folder
    For Each objItem in objApp.NameSpace( myFolder ).Items
        If objItem.IsFolder Then
            ' Check if the subfolder is empty, and if
            ' so, skip it to prevent an error message
            Set objFolder = objFSO.GetFolder( objItem.Path )
            If objFolder.Files.Count + objFolder.SubFolders.Count = 0 Then
                intSkipped = intSkipped + 1
            Else
                objApp.NameSpace( myZipFile ).CopyHere objItem
            End If
        Else
            objApp.NameSpace( myZipFile ).CopyHere objItem
        End If
    Next
 
    Set objFolder = Nothing
    Set objFSO    = Nothing
 
    ' Abort on errors
    If Err Then
        ZipFolder = Array( Err.Number, Err.Source, Err.Description )
        Set objApp = Nothing
        Err.Clear
        On Error Goto 0
        Exit Function
    End If
 
    ' Keep script waiting until compression is done
    intSrcItems = objApp.NameSpace( myFolder  ).Items.Count
    Do Until objApp.NameSpace( myZipFile ).Items.Count + intSkipped = intSrcItems
        WScript.Sleep 200
    Loop
    Set objApp = Nothing
 
    ' Abort on errors
    If Err Then
        ZipFolder = Array( Err.Number, Err.Source, Err.Description )
        Err.Clear
        On Error Goto 0
        Exit Function
    End If
 
    ' Restore default error handling
    On Error Goto 0
 
    ' Return message if empty subfolders were skipped
    If intSkipped = 0 Then
        strSkipped = ""
    Else
        strSkipped = "skipped empty subfolders"
    End If
 
    ' Return code 0 (no error occurred)
    ZipFolder = Array( 0, intSkipped, strSkipped )
End Function

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