Getting file last modified date (explorer value not cmd value)
I have written some Excel VBA code to add the filenames, versions, and last modified date/time to a worksheet. The code appears to work fine, except sometimes the time portion of the Last Modified Date for a file will either be exactly 1 hour forward or backward from what I see in an Explorer window.
I have noticed the values that my code returns is the same as the modified date/time shown in a cmd window if I perform a dir command.
For example, if I look up the dbghelp.dll file in the system32 folder:
C:\Windows\System32>dir dbghelp.*
Volume in drive C has no label.
Volume Serial Number is 16E8-4159
Directory of C:\Windows\System32
21/11/2010 04:24 1,087,488 dbghelp.dll
1 File(s) 1,087,488 bytes
0 Dir(s) 60,439,101,440 bytes free
C:\Windows\System32>
But the same file in an Explorer window shows a modified time of 03:24 on 21/11/2010 - 1 hour earlier.
The code I have written is returning the cmd window time, whereas I want the Explorer window time:
Sub GetFileDetails()
Dim path As String
Dim objFSO As Object
Dim objFile As Object
Dim objFolder As Object
Dim loopCount As Integer
Dim pathCheck As Boolean
'Prompt for directory path
path = InputBox(Prompt:="Enter file path", Title:="Enter file path", Default:="")
If (path = "" Or path = vbNullString) Then
MsgBox ("Invalid path - exiting")
Exit Sub
End If
'Required for interacting with filesystem
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFolder = objFSO.GetFolder(path)
'1st row for path title, 2nd row for column headings
loopCount = 3
For Each objFile In objFolder.Files
Range("A" & loopCount).Value = objFile.Name
Range("B" & loopCount).Value = objFSO.GetFileVersion(objFile)
Range("C" & loopCount).Value = objFile.DateLastModified
'Combine Version and Modified
If Range("B" & loopCount).Value <> "" Then
Range("D" & loopCount).Value = Range("B" & loopCount).Value & ", " & Range("C" & loopCount).Value
Else
Range("D" & loopCount).Value = Range("C" & loopCount).Value
End If
loopCount = loopCount + 1
Next
'Set up headings
Range("A" & 1).Value = (loopCount - 3) & " files found in " & path
Range("A" & 2).Value = "FileName"
Range("B" & 2).Value = "Version"
Range("C" & 2).Value = "Modified"
Range("D" & 2).Value = "Version & Modified"
End Sub
If anyone can shed some light on this issue - it will be greatly appreciated.
===EDIT=== This is the code I have come up with which always gives me the same time as displayed in an explorer window:
Sub GetFileDetails()
Dim path As String
Dim objFSO As Object
Dim objFile As Object
Dim objFolder As Object
Dim loopCount As Integer
Dim pathCheck As Boolean
Dim modDate As Date
Dim modHour As Integer
Dim modMin As Integer
'Prompt for directory path
path = InputBox(Prompt:="Enter file path", Title:="Enter file path", Default:="")
If (path = "" Or path = vbNullString) Then
MsgBox ("Invalid path - exiting")
Exit Sub
End If
'Required for interacting with filesystem
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFolder = objFSO.GetFolder(path)
'1st row for path title, 2nd row for column headings
loopCount = 3
For Each objFile In objFolder.Files
Range("A" & loopCount).Value = objFile.Name
Range("B" & loopCount).Value = objFSO.GetFileVersion(objFile)
Range("D" & loopCount).Value = objFile.Name
'The date modified time for files made in Summer Time are correct, whereas Winter Time will be 1 hour forward
If (IsItSummerTime(objFile.DateLastModified) = True) Then
Range("C" & loopCount).Value = objFile.DateLastModified
Else
modDate = Format(objFile.DateLastModified, "DD-MM-YYYY")
modHour = Hour(objFile.DateLastModified)
modMin = Minute(objFile.DateLastModified)
modHour = modHour - 1
If (modHour < 10) Then
If (modMin < 10) Then
Range("C" & loopCount).Value = modDate & " 0" & modHour & ":0" & modMin
Else
Range("C" & loopCount).Value = modDate & " 0" & modHour & ":" & modMin
End If
Else
If (modMin < 10) Then
Range("C" & loopCount).Value = modDate & " " & modHour & ":0" & modMin
Else
Range("C" & loopCount).Value = modDate & " " & modHour & ":" & modMin
End If
End If
End If
'Combine Version and Modified
If Range("B" & loopCount).Value <> "" Then
Range("E" & loopCount).Value = Range("B" & loopCount).Value & ", " & Range("C" & loopCount).Value
Else
Range("E" & loopCount).Value = Range("C" & loopCount).Value
End If
loopCount = loopCount + 1
Next
'Set up headings
Range("A" & 1).Value = (loopCount - 3) & " files found in " & path
Range("A" & 2).Value = "FileName"
Range("B" & 2).Value = "Version"
Range("C" & 2).Value = "Modified"
Range("D" & 2).Value = "FileName"
Range("E" & 2).Value = "Version & Modified"
End Sub
Function IsItSummerTime(inDate As Date) As Boolean
Dim inDateYear As Integer
Dim findFirstSunday As Date
Dim firstSundayDate As Date
Dim startDays As Integer
Dim endDays As Integer
Dim summerStart As Date
Dim summerEnd As Date
'Summer Time starts on the 13th week
'Summer Time ends on the 42nd week
If (IsItALeapYear(inDate) = True) Then
startDays = (12 * 7) + 1
endDays = (42 * 7) + 1
Else
startDays = 12 * 7
endDays = 42 * 7
End If
'Find the date of the first Sunday in the year
inDateYear = Year(inDate)
For i = 1 To 7
findFirstSunday = DateSerial(inDateYear, 1, i)
If (Weekday(findFirstSunday) = 1) Then
firstSundayDate = findFirstSunday
End If
Next i
'Calculate the start and end dates for Summer Time
summerStart = firstSundayDate + startDays
summerEnd = firstSundayDate + endDays
'Compare inDate to Summer Time values and return boolean value
If (inDate >= summerStart And inDate < summerEnd) Then
IsItSummerTime = True
Else
IsItSummerTime = False
End If
End Function
Function IsItALeapYear(inDate As Date) As Boolean
If (Month(DateSerial(Year(inDate), 2, 29))) = 2 Then
IsItALeapYear = True
Else
IsItALeapYear = False
End If
End Function
Answer
It looks like this is ultimately an OS issue that you'd have to work around, like has been shown, especially since you've edited your code to account for DST.
But you could also use the FileDateTime function. The help article for this points out that the result of this function is based on your system's locale settings. The help article for the DateLastModified property doesn't provide any such caveats, at least for Excel online help.
To modify an exerpt from your edited code above:
'1st row for path title, 2nd row for column headings
loopCount = 3
For Each objFile In objFolder.Files
Range("A" & loopCount).Value = objFile.Name
'use the full path name
Range("B" & loopCount).Value = FileDateTime(objFile_fullpathname)
Range("D" & loopCount).Value = objFile.Name