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NetUserEnum (netapi32)
.
C# Signature:
[DllImport("Netapi32.dll")]
extern static int NetUserEnum([MarshalAs(UnmanagedType.LPWStr)]
string servername,
int level,
int filter,
out IntPtr bufptr,
int prefmaxlen,
out int entriesread,
out int totalentries,
out int resume_handle);
VB Signature:
Public Declare Function NetUserEnum Lib "Netapi32.dll" ( _
<MarshalAs(UnmanagedType.LPWStr)> ByVal servername As String, _
ByVal level As Integer, _
ByVal filter As Integer, _
ByRef bufptr As IntPtr, _
ByVal prefmaxlen As Integer, _
ByRef entriesread As Integer, _
ByRef totalentries As Integer, _
ByRef resume_handle As Integer) As Integer
User-Defined Types:
// Passing -1 as prefmaxlen makes the system allocate the buffer.
// LMCONS.h
const int MAX_PREFERRED_LENGTH = -1;
// You'll need these for the return values
// LMERR.h
const int NERR_Success = 0; /* Success */
const int NERR_BASE = 2100;
const int NERR_InvalidComputer = (NERR_BASE+251); /* This computer name is invalid. */
// WINERROR.h
const int ERROR_ACCESS_DENIED = 5;
const int ERROR_MORE_DATA = 234;
Notes:
[2005-06-15] VB sample contributed by Graeme Grant
Dim users As New ArrayList()
Dim EntriesRead As Integer
Dim TotalEntries As Integer
Dim [Resume] As Integer
Dim bufPtr As IntPtr
NetUserEnum(server, 0, 2, bufPtr, - 1, EntriesRead, TotalEntries, [Resume])
If EntriesRead > 0 Then
Dim Users(EntriesRead) As USER_INFO_0
Dim iter As IntPtr = bufPtr
Dim i As Integer
For i = 0 To EntriesRead - 1
Users(i) = CType(Marshal.PtrToStructure(iter, GetType(USER_INFO_0)), USER_INFO_0)
iter = CType(CInt(iter) + Marshal.SizeOf(GetType(USER_INFO_0)), IntPtr)
users.Add(Users(i).Username)
Next i
NetApiBufferFree(bufPtr)
End If
[C#]
ArrayList users = new ArrayList();
int EntriesRead;
int TotalEntries;
int Resume;
IntPtr bufPtr;
NetUserEnum(server, 0, 2, out bufPtr, -1, out EntriesRead, out TotalEntries, out Resume);
if(EntriesRead> 0)
{
USER_INFO_0[] Users = new USER_INFO_0[EntriesRead];
IntPtr iter = bufPtr;
for(int i=0; i < EntriesRead; i++)
{
Users[i] = (USER_INFO_0)Marshal.PtrToStructure(iter, typeof(USER_INFO_0));
iter = (IntPtr)((int)iter + Marshal.SizeOf(typeof(USER_INFO_0)));
The NetUserEnum function provides information about all user accounts on a server.
2/14/2016 8:06:51 AM - -108.168.5.220
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