C# Signature:
[DllImport("netapi32.dll",EntryPoint="NetServerEnum")]
public static extern int NetServerEnum(
[MarshalAs(UnmanagedType.LPWStr)]string servername,
int level,
out IntPtr bufptr,
int prefmaxlen,
ref int entriesread,
ref int totalentries,
SV_101_TYPES servertype,
[MarshalAs(UnmanagedType.LPWStr)]string domain,
int resume_handle);
[DllImport("netapi32.dll",EntryPoint="NetApiBufferFree")]
public static extern int NetApiBufferFree(IntPtr buffer);
VB Signature:
Private Declare Unicode Function NetServerEnum Lib "netapi32" _
(ByVal Servername As IntPtr, _
ByVal Level As Integer, _
ByRef bufptr As IntPtr, _
ByVal PrefMaxLen As Integer, _
ByRef entriesread As Integer, _
ByRef TotalEntries As Integer, _
ByVal serverType As Integer, _
ByVal Domain As IntPtr, _
ByVal ResumeHandle As Integer) As Integer
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
using System;
using System.Runtime.InteropServices;
using System.Collections ;
namespace Win32
{
/// <summary>
/// Summary description for Class1.
/// </summary>
///
public class NetApi32
{
// constants
public const uint ERROR_SUCCESS = 0;
public const uint ERROR_MORE_DATA = 234;
public enum SV_101_TYPES:uint
{
SV_TYPE_WORKSTATION= 0x00000001,
SV_TYPE_SERVER= 0x00000002,
SV_TYPE_SQLSERVER = 0x00000004,
SV_TYPE_DOMAIN_CTRL= 0x00000008,
SV_TYPE_DOMAIN_BAKCTRL= 0x00000010,
SV_TYPE_TIME_SOURCE= 0x00000020,
SV_TYPE_AFP= 0x00000040,
SV_TYPE_NOVELL= 0x00000080,
SV_TYPE_DOMAIN_MEMBER = 0x00000100,
SV_TYPE_PRINTQ_SERVER = 0x00000200,
SV_TYPE_DIALIN_SERVER = 0x00000400,
SV_TYPE_XENIX_SERVER = 0x00000800,
SV_TYPE_SERVER_UNIX = 0x00000800,
SV_TYPE_NT = 0x00001000,
SV_TYPE_WFW = 0x00002000,
SV_TYPE_SERVER_MFPN= 0x00004000,
SV_TYPE_SERVER_NT = 0x00008000,
SV_TYPE_POTENTIAL_BROWSER = 0x00010000,
SV_TYPE_BACKUP_BROWSER= 0x00020000,
SV_TYPE_MASTER_BROWSER= 0x00040000,
SV_TYPE_DOMAIN_MASTER = 0x00080000,
SV_TYPE_SERVER_OSF= 0x00100000,
SV_TYPE_SERVER_VMS= 0x00200000,
SV_TYPE_WINDOWS= 0x00400000,
SV_TYPE_DFS= 0x00800000,
SV_TYPE_CLUSTER_NT= 0x01000000,
SV_TYPE_TERMINALSERVER= 0x02000000,
SV_TYPE_CLUSTER_VS_NT = 0x04000000,
SV_TYPE_DCE= 0x10000000,
SV_TYPE_ALTERNATE_XPORT= 0x20000000,
SV_TYPE_LOCAL_LIST_ONLY= 0x40000000,
SV_TYPE_DOMAIN_ENUM= 0x80000000,
SV_TYPE_ALL= 0xFFFFFFFF
};
[StructLayout(LayoutKind.Sequential)]
public struct SERVER_INFO_101
{
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)]
public UInt32 sv101_platform_id;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
public string sv101_name;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)] public UInt32 sv101_version_major;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)] public UInt32 sv101_version_minor;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)] public UInt32 sv101_type;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)] public string sv101_comment;
};
public enum PLATFORM_ID
{
PLATFORM_ID_DOS = 300,
PLATFORM_ID_OS2 = 400,
PLATFORM_ID_NT = 500,
PLATFORM_ID_OSF = 600,
PLATFORM_ID_VMS = 700
}
[DllImport("netapi32.dll",EntryPoint="NetServerEnum")]
public static extern int NetServerEnum( [MarshalAs(UnmanagedType.LPWStr)]string servername,
int level,
out IntPtr bufptr,
int prefmaxlen,
ref int entriesread,
ref int totalentries,
SV_101_TYPES servertype,
[MarshalAs(UnmanagedType.LPWStr)]string domain,
int resume_handle);
[DllImport("netapi32.dll",EntryPoint="NetApiBufferFree")]
public static extern int
NetApiBufferFree(IntPtr buffer);
[DllImport ("Netapi32", CharSet=CharSet.Unicode)]
private static extern int NetMessageBufferSend(
string servername,
string msgname,
string fromname,
string buf,
int buflen);
public static int NetMessageSend(string serverName,string messageName,string fromName,string strMsgBuffer, int iMsgBufferLen)
{
return NetMessageBufferSend(serverName,messageName,fromName,strMsgBuffer,iMsgBufferLen*2);
}
public static ArrayList GetServerList( NetApi32.SV_101_TYPES ServerType)
{
int entriesread=0,totalentries=0;
ArrayList alServers = new ArrayList();
do
{
// Buffer to store the available servers
// Filled by the NetServerEnum function
IntPtr buf = new IntPtr();
SERVER_INFO_101 server;
int ret = NetServerEnum(null,101,out buf,-1,
ref entriesread,ref totalentries,
ServerType,null,0);
// if the function returned any data, fill the tree view
if( ret == ERROR_SUCCESS ||
ret == ERROR_MORE_DATA ||
entriesread > 0)
{
Int32 ptr = buf.ToInt32();
for(int i=0; i<entriesread; i++)
{
// cast pointer to a SERVER_INFO_101 structure
server = (SERVER_INFO_101)Marshal.PtrToStructure(new IntPtr(ptr),typeof(SERVER_INFO_101));
ptr += Marshal.SizeOf(server);
// add the machine name and comment to the arrayList.
//You could return the entire structure here if desired
alServers.Add( server);
}
}
// free the buffer
NetApiBufferFree(buf);
}
while
(
entriesread < totalentries &&
entriesread != 0
);
return alServers;
}
}
}
Alternative Managed API:
Do you know one? Please contribute it!
