Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Cannot used DriveInfo() on UNC drive
Message
From
03/11/2006 09:53:18
Cetin Basoz
Engineerica Inc.
Izmir, Turkey
 
 
To
02/11/2006 03:36:32
General information
Forum:
ASP.NET
Category:
Coding, syntax and commands
Environment versions
Environment:
VB 8.0
OS:
Windows XP SP2
Database:
Visual FoxPro
Miscellaneous
Thread ID:
01166071
Message ID:
01166888
Views:
12
>Here is a new approach:
>
>
>        ' Get the information on a drive by the use of ManagementScope
>        Public Function GetDriveInformationManagementScope() As Boolean
>            Dim loConnectionOptions As ConnectionOptions = New ConnectionOptions()
>            Dim loManagementObject As ManagementObject
>            Dim loManagementObjectCollection As ManagementObjectCollection
>            Dim loManagementObjectSearcher As ManagementObjectSearcher
>            Dim loManagementScope As ManagementScope
>            Dim loObjectQuery As ObjectQuery
>
>            loConnectionOptions.Username = cUsername
>            loConnectionOptions.Password = cPassword
>
>            ' Use WMI namespace WMI in which management options will be done
>            If cUsername.Length > 0 Then
>                loManagementScope = New ManagementScope("\\" + cIP + "\root\cimv2", loConnectionOptions)
>            Else
>                loManagementScope = New ManagementScope("\\" + cIP + "\root\cimv2")
>            End If
>
>            ' The ObjectQuery class represents a management query which returns instances or classes
>            loObjectQuery = New ObjectQuery("select * from Win32_LogicalDisk where DriveType=3")
>
>            ' The ManagementObjectSearcher class allows the extration of an object management collection
>            ' in regards to the query specified during the instantiation by the use of the
>            ' ObjectQuery parameter or directly by a string
>            loManagementObjectSearcher = New ManagementObjectSearcher(loManagementScope, loObjectQuery)
>
>            ' The ManagementObjectCollection represents various object management collections extracted from WMI
>            loManagementObjectCollection = loManagementObjectSearcher.Get()
>
>            For Each loManagementObject In loManagementObjectCollection
>                cVolumeName = loManagementObject("VolumeName")
>                cVolumeSerialNumber = loManagementObject("VolumeSerialNumber")
>                nAvailableByte = loManagementObject("Availability")
>                nFreeSpace = loManagementObject("Freespace")
>            Next
>
>            Return True
>        End Function
>
>
>This one allows me to get the drive information of a UNC path that is local or remote. For remote ones, I can only obtain something workable for as long as this is a Windows server. So, for the UNC path I have on the Tera Station, this cannot work.
>
>For local ones, I don't have to initialize the username and password. For remote ones, if I don't initialize the username and password, I get an access is denied message. When I initialize the username and password, I can get the drive information.
>
>There is one thing that is weird however. For a local one, I have 41.6 GB of free space. However, this method returns 446801879040 for the Freespace value. For the remote one, I have 35.8 GB of free space. One this one, the Freespace value is 385367900160. Could it be that there is some kind of conversion I need to do in order to get the proper value?
>
>As for non Windows server UNC path, I don't know of any approach that would do it. There is surely one because when I am in Windows, from Explorer, I can easily see that there is 988 GB of free space on that one.

WBEM doesn't work for me (WMI needs to be installed on remote AFAIK).
Values are correct if "0" at end are typos.
Cetin
Çetin Basöz

The way to Go
Flutter - For mobile, web and desktop.
World's most advanced open source relational database.
.Net for foxheads - Blog (main)
FoxSharp - Blog (mirror)
Welcome to FoxyClasses

LinqPad - C#,VB,F#,SQL,eSQL ... scratchpad
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform