Determine the Operating System installation date using wmi in vb.net programmatically

This article will describe how to determine the operating system installation date using wmi with vb.net source code.The wmi object is created and queried for the operating system installation date. Here is the example source code

Private Sub setOSInstallDate()
        Try
            Dim myAlias As String = "Win32_OperatingSystem"
            Dim strOut As String = ""
            Dim colItems = GetObject("winmgmts:\\.\root\cimv2").ExecQuery("Select * from " & myAlias)
            'strOut = strOut & "The left is Property Name , After : The value"
            Dim dateString As String = ""
            For Each objComputer In colItems
                dateString = objComputer.InstallDate
                'MsgBox(dateString) 'as yyyymmddhhmmss.000000+330
            Next
            Dim year = Mid(dateString, 1, 4)
            'MsgBox(year)
            Dim mth = Mid(dateString, 5, 2)
            'MsgBox(mth)
            Dim mdate = Mid(dateString, 7, 2)

            Dim mHr = Mid(dateString, 9, 2)

            Dim mMin = Mid(dateString, 11, 2)

            Dim mSS = Mid(dateString, 13, 2)
            'MsgBox(mdate)
            Dim firstDate, msg As String
            Dim secondDate As Date
            'to convert to date the required string "dd-mm-yyyy hh:mm:ss"
            firstDate = mdate & "-" & mth & "-" & year & " " & mHr & ":" & mMin & ":" & mSS
            'secondDate = CDate(firstDate)
            'MsgBox(secondDate.ToString)
            strOSInstallDate = firstDate 'secondDate.ToString
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub

That is all.

If you liked this article please do leave a reply and share it with friends.

Thanks.