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All I need to do is zip up an Excel file. The code I am using is this:

        Dim myZipper As New FastZip
        myZipper.CreateZip(txtFilePath.Text, "C:\", True, "")

It seems like simple enough code, I took it from the wiki under resources (thanks for that by the way). The full error message is this:

"The process cannot access the file 'C:\hiberfil.sys' because it is being used by another process."

I have no idea why it would need to access a system file that is associated with hibernation. I am working on a lap top FYI, using XP, VS2008 and programming in VB.Net obviously. I've read a couple of pages after googling this error message which suggest deleting the file and trying again but it is in use apparantly but I dont know what by. And even if this did fix my issue, would it happen again another time or on other machines once I publish the application?

If anyone could point me in the right direction, I'd appreciate it.

hiberfil.sys is created by the suspend-to-disk (hibernate) mode.

to remove it, disable hibernate mode, and it should automatically get deleted (or do it manually after a reboot).

to recreate it, enable hibernate mode again

Windows if disallowing your application opening the hibernation storage file. Quite reasonably, I would have thought.

Realisitically, are you sure you want to try to add the entire contents of a C: drive into a zip file? The windows folder is huge and contains very little worth backing up. I think you just need to change the 2nd parameter from "C:\" to someting sensible, and it will work. Also avoid the situation where you try to add the zip file into itself.

Hope this helps
David

On re-reading your comment, I think the parameters are not correct. To add one file, try this:

myZipper.CreateZip(txtOutputZipFileName.Text, txtFolderContainingExcelfile, False, txtNameOfExcelFile)

e.g.

myZipper.CreateZip("C:\temp\myzip.zip", "c:\foldercontainingtheExcel",  False, "MyExcelFile.xls")

If the entire path and filename is being input by the user, there are handy static methods in the Path class the split that into the folder and filename components.