My program is monitoring the files on a folder. Some of them take a while to
be transferred and some are simply locked by the user.

How do I know when a file is "done" transferring or released by the user?

Just check for IO errors. If there are any then the files are most probably
in use

Crouchie1998
BA (HONS) MCP MCSE

You mean something like this?

Private Function FileBeingUsed(ByVal sFile As String) As Boolean
    Dim fInfo As New IO.FileInfo(sFile)
    If fInfo.Attributes = IO.FileAttributes.ReadOnly Then
        'if the file is read only then by definition isn't it ready?
        Return False
    End If
    Dim fNum As Integer = FreeFile()
    Try
        FileOpen(fNum, sFile, OpenMode.Output, OpenAccess.Write,
OpenShare.Shared)
        FileClose(fNum)
        Return False
    Catch ex As Exception
        Return True
    End Try
End Function

Isn't this a little "brute force"? Do you have a better method/suggestion?

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