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Get users currently logged in

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Submitted on: 1/1/2015 4:52:00 AM
By: Jan ten Hove (from psc cd)  
Level: Intermediate
User Rating: By 10 Users
Compatibility: VB.NET
Views: 779
 
     Get all users currently logged into to a system
 
code:
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//**************************************
// Name: Get users currently logged in
// Description:Get all users currently logged into to a system
// By: Jan ten Hove (from psc cd)
//
// Returns:user names
//
// Side Effects:You must have the proper rights to acces the HKEY_USERS.
//**************************************

Dim reg As RegistryKey 'the reg key
Dim user, subKeyName As String 'key names
reg = Registry.Users
If Not reg Is Nothing Then'always do this check, maybe keys does not exists
 For Each subKeyName In reg.GetSubKeyNames
reg = Registry.Users.OpenSubKey(subKeyName & "\Software\Microsoft\Windows\CurrentVersion\Explorer", False) 'open the subkey
If Not reg Is Nothing Then 'check
 If reg.GetValue("Logon User Name", Nothing) = Nothing Then 'read
'no user found in this subkey
 Else
Msgbox(reg.GetValue("Logon User Name", Nothing))
 End If
End If
 Next
Else
 Msgbox("No users found")
End If


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