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NetLocalGroupGetMembers (netapi32)
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C# Signature:
/// <summary>
/// The NetLocalGroupGetMembers function retrieves a list of the members of a particular local group in
/// the security database, which is the security accounts manager (SAM) database or, in the case
/// of domain controllers, the Active Directory. Local group members can be users or global groups.
/// </summary>
/// <param name="servername"></param>
/// <param name="localgroupname"></param>
/// <param name="level"></param>
/// <param name="bufptr"></param>
/// <param name="prefmaxlen"></param>
/// <param name="entriesread"></param>
/// <param name="totalentries"></param>
/// <param name="resume_handle"></param>
/// <returns></returns>
[DllImport("NetAPI32.dll", CharSet=CharSet.Unicode)]
public extern static int NetLocalGroupGetMembers(
[MarshalAs(UnmanagedType.LPWStr)] string servername,
[MarshalAs(UnmanagedType.LPWStr)] string localgroupname,
int level,
out IntPtr bufptr,
int prefmaxlen,
out int entriesread,
out int totalentries,
ref int resume_handle);
VB Signature:
Declare Function NetLocalGroupGetMembers Lib "netapi32.dll" (TODO) As TODO
User-Defined Types:
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Unicode)]
public struct LOCALGROUP_MEMBERS_INFO_2
{
public int lgrmi2_sid;
public int lgrmi2_sidusage;
public string lgrmi2_domainandname;
}
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
//Example code for a class file or dll( I used a dll)
public static ArrayList GetLocalGroupMembers(string ServerName,string GroupName)
{
ArrayList myList = new ArrayList();
int EntriesRead;
int TotalEntries;
int Resume;
IntPtr bufPtr;
val = NetLocalGroupGetMembers(ServerName, GroupName, 2, out bufPtr, -1, out EntriesRead, out TotalEntries, out Resume);
if(EntriesRead> 0)
{
LOCALGROUP_MEMBERS_INFO_2[] Members = new LOCALGROUP_MEMBERS_INFO_2[EntriesRead];
IntPtr iter = bufPtr;
for(int i=0; i < EntriesRead; i++)
{
Members[i] = (LOCALGROUP_MEMBERS_INFO_2)Marshal.PtrToStructure(iter, typeof(LOCALGROUP_MEMBERS_INFO_2));
iter = (IntPtr)((int)iter + Marshal.SizeOf(typeof(LOCALGROUP_MEMBERS_INFO_2)));
myList.Add(Members[i].lgrmi2_domainandname + "," + Members[i].lgrmi2_sidusage);
}
NetApiBufferFree(bufPtr);
}
return myList;
}
//Example code for calling application
// { //I used this to retrieve the type of group so I could use an icon in a treeview if desired.
//split[0] is the "domain\group or user", split[1] is the type, 1 for user, 2 for group.
// string [] split = null;
// split = str.Split(delimiter);
// Console.WriteLine(split[0] + split[1]);
// }
Alternative Managed API:
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