Question

How to detect network drive mount event using wmi ? I’m mainly interested i something like Win32_VolumeChangeEvent just for network drives.

 _eventWatcher = new ManagementEventWatcher("SELECT * FROM Win32_VolumeChangeEvent");

 _eventWatcher.EventArrived += (o, args) => 
     {switch(args.NewEvent["EventType"].ToString()[0])
         {
             case '2':
                 //mount
                 Debug.WriteLine(args.NewEvent["DriveName"]);
                 break;
             case '3':
                 //unmount
                 break;
         }
     };

 _eventWatcher.Start();

Thanks in advance.

Answer 1

You can use this query (I use Powershell for rapid test but you can easily transform to C#)

$query = "SELECT * FROM __instanceCreationEvent WITHIN 5 WHERE TargetInstance ISA 'Win32_LogicalDisk' AND TargetInstance.DriveType=4"

Register-WMIEvent -Query $query -Action {$global:a=$Args[0];$global:b=$Args[1];write-host "done" }

Id              Name            State      HasMoreData     Location  Command
--              ----            -----      -----------     --------  -------
14              f2c5223d-3ae... NotStarted False                     $global:a=$Args[0];$gl...


PS C:\> net use
Les nouvelles connexions seront mémorisées.

La liste est vide.

PS C:\> net use o: \\jpbhpp2\c$
La commande s'est terminée correctement.

PS C:\> done


PS C:\> $a


Scope     : System.Management.ManagementScope
Query     : System.Management.EventQuery
Options   : System.Management.EventWatcherOptions
Site      :
Container :



PS C:\> $b

NewEvent                                                    Context
--------                                                    -------
System.Management.ManagementBaseObject                      {}


PS C:\> $b.NewEvent


__GENUS             : 2
__CLASS             : __InstanceCreationEvent
__SUPERCLASS        : __InstanceOperationEvent
__DYNASTY           : __SystemClass
__RELPATH           :
__PROPERTY_COUNT    : 3
__DERIVATION        : {__InstanceOperationEvent, __Event, __IndicationRelated, __SystemClass}
__SERVER            : WM2008R2ENT
__NAMESPACE         : //./root/CIMV2
__PATH              :
SECURITY_DESCRIPTOR :
TargetInstance      : System.Management.ManagementBaseObject
TIME_CREATED        : 129670237461553750



PS C:\> $b.NewEvent.TargetInstance


__GENUS                      : 2
__CLASS                      : Win32_LogicalDisk
__SUPERCLASS                 : CIM_LogicalDisk
__DYNASTY                    : CIM_ManagedSystemElement
__RELPATH                    : Win32_LogicalDisk.DeviceID="O:"
__PROPERTY_COUNT             : 40
__DERIVATION                 : {CIM_LogicalDisk, CIM_StorageExtent, CIM_LogicalDevice, CIM_LogicalElement...}
__SERVER                     : WM2008R2ENT
__NAMESPACE                  : root\CIMV2
__PATH                       : \\WM2008R2ENT\root\CIMV2:Win32_LogicalDisk.DeviceID="O:"
Access                       : 0
Availability                 :
BlockSize                    :
Caption                      : O:
Compressed                   : False
ConfigManagerErrorCode       :
ConfigManagerUserConfig      :
CreationClassName            : Win32_LogicalDisk
Description                  : Connexion réseau
DeviceID                     : O:
DriveType                    : 4
ErrorCleared                 :
ErrorDescription             :
ErrorMethodology             :
FileSystem                   : NTFS
FreeSpace                    : 36223737856
InstallDate                  :
LastErrorCode                :
MaximumComponentLength       : 255
MediaType                    : 0
Name                         : O:
NumberOfBlocks               :
PNPDeviceID                  :
PowerManagementCapabilities  :
PowerManagementSupported     :
ProviderName                 : \\jpbhpp2\c$
Purpose                      :
QuotasDisabled               : True
QuotasIncomplete             : False
QuotasRebuilding             : False
Size                         : 500000878592
Status                       :
StatusInfo                   :
SupportsDiskQuotas           : True
SupportsFileBasedCompression : True
SystemCreationClassName      : Win32_ComputerSystem
SystemName                   : WM2008R2ENT
VolumeDirty                  :
VolumeName                   :
VolumeSerialNumber           : 96B00597