NetUserGetGroups API

[LeeSalter]

All,

I have a call to the NetUserGetGroups API and can get the first entry in the returned User Groups back.

My question is, how do I iterate through the entire list of user groups??

the code I am using is below:-

    Public Function GetGroups(ByVal UserID As String) As Boolean
        Dim GI0 As New GROUP_USERS_INFO_0()
        Dim Level As Integer = 0
        Dim Server As String = GetPDC() & vbNullChar
        Dim i As Integer
        Dim lRet As Integer = -1
        Dim size As Integer = Marshal.SizeOf(GI0)
        Dim lpBuf As IntPtr = Marshal.AllocHGlobal(size)
        Dim EntriesRead As Integer
        Dim TotalEntries As Integer

        UserID = UserID & vbNullChar

        Marshal.StructureToPtr(GI0, lpBuf, True)

        lRet = NetUserGetGroups(Server, UserID, Level, lpBuf, -1, _
            EntriesRead, TotalEntries)

        If lRet = NERR_SUCCESS Then
            GI0 = CType(Marshal.PtrToStructure(lpBuf, _
                     GetType(GROUP_USERS_INFO_0)), GROUP_USERS_INFO_0)

            For i = 1 To EntriesRead
                _myGroupsbox.Items.Add(GI0.grui0_name)
                'How do I get the next Group!!!!!???? 
            Next
        End If

[RoadRunster]

Hi,
I've found a sample code in c# using NetUserGetLocalGroups and here is the extract you're looking for :

groups = new string[totalentries];

                Type typeOfStruct = typeof(LOCALGROUP_USERS_INFO_0);
                int sizeOfStruct = Marshal.SizeOf(typeOfStruct);
                LOCALGROUP_USERS_INFO_0 LGInfo;
                IntPtr currentStructPtr;

                // parcours du buffer 
                for (int i = 0; i < totalentries; i++)
                {
                    // définition du pointeur de lecture dans le buffer 
                    currentStructPtr = new IntPtr((int)bufptr + (i * sizeOfStruct));
                    // récupération de l'instance de LOCALGROUP_USERS_INFO_0 
                    LGInfo = (LOCALGROUP_USERS_INFO_0)Marshal.PtrToStructure(currentStructPtr, typeOfStruct);
                    groups[i] = LGInfo.groupname;
                }

I'm trying to use NetUserGetLocalGroups and NetUserGetGroups with vb net but I always received 2221. I probably have a problem with data type or the I declare the API.

Could tell how you declare the API in your code please ?