Q189667: HOWTO: List the Drives in a System Using the FileSystemObject
Article: Q189667
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0,6.0
Operating System(s):
Keyword(s): kbCtrl kbVBp kbVBp500 kbVBp600 kbVS600 kbGrpDSVB kbDSupport
Last Modified: 11-JAN-2001
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The information in this article applies to:
- Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0
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SUMMARY
=======
This article shows you how to list all the drives in a computer system using the
FileSystemObject. The article shows how to create a sample project that lists
all the drives in a system as well as the properties of each drive.
MORE INFORMATION
================
This article assumes you are familiar with using objects, collections, and
object models in Visual Basic. The FileSystemObject allows you to perform a
number tasks on the file system of a computer. This object is available to your
project by making a reference to the Microsoft Script Runtime file scrrun.dll.
This file ships with Windows 98 and the following products:
Windows Script Host
Windows NT Option Pack
Microsoft Internet Information Server 3.0
Scripting 3.1 upgrade
Visual Studio 6.0
Visual Basic 6.0
After making a reference to the Script Runtime file, you create an instance of
the FileSystemObject using the CreateObject method or by creating a variable as
a new FileSystemObject. The object allows you to access each Drive object in the
Drives collection. Each Drive has a number of properties that you can query to
determine the drive type, the total space, the free space, and the file system.
The next section shows you how to create a sample project that displays all the
drives in a system and the properties of each drive.
Step-by-Step Example
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1. Start a new Standard EXE project in Visual Basic. Form1 is created by
default.
2. Add a reference to the Microsoft Script Runtime by completing the following
steps:
a. From the Project menu, click References to display the References dialog
box.
b. Click Browse to open the Add Reference dialog box.
c. Select the file scrrun.dll and click OK to close the Add Reference dialog
box. This file is installed in your system directory. Microsoft Scripting
Runtime appears with a check in the Available Referenced list box of the
References dialog box.
d. Click OK to close the References dialog box.
3. Add a CommandButton, ListBox, and Label to Form1.
4. Copy the following code to the Code window of Form1:
Option Explicit
Dim fso As New FileSystemObject
Dim fsoDrives As Drives
Dim fsoDrive As Drive
Private Sub Form_Load()
Label1.AutoSize = True
Command1.Caption = "List All Drives"
List1.Enabled = False
End Sub
Private Sub Command1_Click()
Dim sDrive As String
Dim sDriveType As String
Set fsoDrives = fso.Drives
List1.Enabled = True
For Each fsoDrive In fsoDrives
sDrive = "Drive " & fsoDrive.DriveLetter & ": "
Select Case fsoDrive.DriveType
Case 0: sDriveType = "Unknown"
Case 1: sDriveType = "Removable Drive"
Case 2: sDriveType = "Fixed Disk"
Case 3: sDriveType = "Remote Disk"
Case 4: sDriveType = "CDROM Drive"
Case 5: sDriveType = "RAM Disk"
End Select
sDrive = sDrive & sDriveType
List1.AddItem (sDrive)
Next
Set fsoDrives = Nothing
End Sub
Private Sub List1_Click()
Dim sDriveSpec As String
Dim sSelDrive As String
sSelDrive = List1.List(List1.ListIndex)
sSelDrive = Mid(sSelDrive, 7, 1)
Set fsoDrive = fso.GetDrive(sSelDrive)
With fsoDrive
If .IsReady = True Then
sDriveSpec = "Drive " & .DriveLetter & _
" Specifications" & vbLf
sDriveSpec = sDriveSpec & "Free Space: " & _
.FreeSpace & " bytes" & vbLf
sDriveSpec = sDriveSpec & "File System: " & _
.FileSystem & vbLf
sDriveSpec = sDriveSpec & "Serial Number: " & _
.SerialNumber & vbLf
sDriveSpec = sDriveSpec & "Total Size: " & _
.TotalSize & " bytes" & vbLf
sDriveSpec = sDriveSpec & "Volume Name: " & _
.VolumeName
Label1.Caption = sDriveSpec
Else
MsgBox ("Drive Not Ready")
End If
End With
Set fsoDrive = Nothing
End Sub
5. On the Run menu, select Start, or press the F5 key to start the program.
Click the "List All Drives" button to display all the drives in your system
in the ListBox. Click on a drive in the ListBox to display the properties of
the drive.
REFERENCES
==========
For additional information, please see the following articles in the Microsoft
Knowledge Base:
Q186118 : HOWTO: Use FileSystemObject with Visual Basic
Q185601 : HOWTO: Recursively Search Directories Using FileSystemObject
Additional query words:
======================================================================
Keywords : kbCtrl kbVBp kbVBp500 kbVBp600 kbVS600 kbGrpDSVB kbDSupport
Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600
Version : WINDOWS:5.0,6.0
Issue type : kbhowto
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