Public Function ElapsedTimeString(dateTimeStart As Date, _
dateTimeEnd As Date) _
As String
Dim interval As Double, str As String, days As Variant
Dim hours As String, minutes As String, seconds As String
If IsNull(dateTimeStart) = True Or _
IsNull(dateTimeEnd) = True Then Exit Function
interval = dateTimeEnd - dateTimeStart
days = Fix(CSng(interval))
hours = Format(interval, "h")
minutes = Format(interval, "n")
seconds = Format(interval, "s")
' Days part of the string
str = IIf(days = 0, "", _
IIf(days = 1, days & " Day", days & " Days"))
str = str & IIf(days = 0, "", _
IIf(hours & minutes & seconds <> "000", ", ", " "))
' Hours part of the string
str = str & IIf(hours = "0", "", _
IIf(hours = "1", hours & " Hour", hours & " Hours"))
str = str & IIf(hours = "0", "", _
IIf(minutes & seconds <> "00", ", ", " "))
' Minutes part of the string
str = str & IIf(minutes = "0", "", _
IIf(minutes = "1", minutes & " Minute", _
minutes & " Minutes"))
str = str & IIf(minutes = "0", "", _
IIf(seconds <> "0", ", ", " "))
' Seconds part of the string
str = str & IIf(seconds = "0", "", _
IIf(seconds = "1", seconds & " Second", _
seconds & " Seconds"))
ElapsedTimeString = IIf(str = "", "0", str)
End Function