// Clase para listar los usarios
public void EnumerateUsers()
{
int EntriesRead;
int TotalEntries;
int Resume;
listBox2.Items.Clear();
IntPtr bufPtr;
GettingAllUsers.NetworkAPI.NetUserEnum(null, 0, 2, out bufPtr, -1, out EntriesRead, out TotalEntries, out Resume);
if (EntriesRead > 0)
{
NetworkAPI.USER_INFO_0[] Users = new NetworkAPI.USER_INFO_0[EntriesRead];
IntPtr iter = bufPtr;
for (int i = 0; i < EntriesRead; i++)
{
Users[i] = (NetworkAPI.USER_INFO_0)Marshal.PtrToStructure(iter, typeof(NetworkAPI.USER_INFO_0));
iter = (IntPtr)((int)iter + Marshal.SizeOf(typeof(NetworkAPI.USER_INFO_0)));
listBox2.Items.Add(Users[i].Username);
}
NetworkAPI.NetApiBufferFree(bufPtr);
}
listBox2.SelectedIndex = 0;
}
public static string[] GetLocalGroupMembers()
{
// returns the "DOMAIN\user" members for a specified local group name
// adapted from boboes' code at https://stackoverflow.com/questions/33935825/pinvoke-netlocalgroupgetmembers-runs-into-fatalexecutionengineerror/33939889#33939889
string computerName = null; // null for the local machine
string groupName = "Administrators";
int EntriesRead;
int TotalEntries;
IntPtr Resume;
IntPtr bufPtr;
uint retVal = NetworkAPI.NetLocalGroupGetMembers(computerName, groupName, 2, out bufPtr, -1, out EntriesRead, out TotalEntries, out Resume);
if (retVal != 0)
{
if (retVal == NetworkAPI.ERROR_ACCESS_DENIED)
{
Console.WriteLine("Access denied"); return(null);
}
if (retVal == NetworkAPI.ERROR_MORE_DATA)
{
Console.WriteLine("ERROR_MORE_DATA"); return(null);
}
if (retVal == NetworkAPI.ERROR_NO_SUCH_ALIAS)
{
Console.WriteLine("Group not found"); return(null);
}
if (retVal == NetworkAPI.NERR_InvalidComputer)
{
Console.WriteLine("Invalid computer name"); return(null);
}
if (retVal == NetworkAPI.NERR_GroupNotFound)
{
Console.WriteLine("Group not found"); return(null);
}
if (retVal == NetworkAPI.SERVER_UNAVAILABLE)
{
Console.WriteLine("Server unavailable"); return(null);
}
Console.WriteLine("Unexpected NET_API_STATUS: " + retVal.ToString());
return(null);
}
if (EntriesRead > 0)
{
string[] names = new string[EntriesRead];
NetworkAPI.LOCALGROUP_MEMBERS_INFO_2[] Members = new NetworkAPI.LOCALGROUP_MEMBERS_INFO_2[EntriesRead];
IntPtr iter = bufPtr;
for (int i = 0; i < EntriesRead; i++)
{
Members[i] = (NetworkAPI.LOCALGROUP_MEMBERS_INFO_2)Marshal.PtrToStructure(iter, typeof(NetworkAPI.LOCALGROUP_MEMBERS_INFO_2));
//x64 safe
iter = new IntPtr(iter.ToInt64() + Marshal.SizeOf(typeof(NetworkAPI.LOCALGROUP_MEMBERS_INFO_2)));
names[i] = Members[i].lgrmi2_domainandname;
}
NetworkAPI.NetApiBufferFree(bufPtr);
return(names);
}
else
{
return(null);
}
}
