As an experiment I managed to call libvirt from C# (using Mono, but similar code should work for .Net). This email should give interested people enough information to produce a proper set of bindings for libvirt. ---------------------------------------------------------------------- using System; using System.Runtime.InteropServices; [StructLayout (LayoutKind.Sequential)] class NodeInfo { [MarshalAs (UnmanagedType.ByValTStr, SizeConst=32)] public string model; public ulong memory; public uint cpus; public uint mhz; public uint nodes; public uint sockets; public uint cores; public uint threads; } class Connection { IntPtr _handle; [DllImport ("libvirt.so")] static extern IntPtr virConnectOpen ([In] string name); public Connection (string name) { _handle = virConnectOpen (name); } [DllImport ("libvirt.so")] static extern IntPtr virConnectClose (IntPtr h); ~Connection () { virConnectClose (_handle); } [DllImport ("libvirt.so")] static extern int virNodeGetInfo (IntPtr h, [Out] NodeInfo info); public NodeInfo nodeGetInfo () { NodeInfo info = new NodeInfo (); if (virNodeGetInfo (_handle, info) == -1) { // throw new LibvirtException ("virNodeGetInfo"); } return info; } } class Test { public static void Main () { Connection conn = new Connection ("test:///default"); NodeInfo info = conn.nodeGetInfo (); Console.WriteLine ("Results of virNodeGetInfo:"); Console.WriteLine ("model = {0}", info.model); Console.WriteLine ("memory = {0}", info.memory); Console.WriteLine ("cpus = {0}", info.cpus); Console.WriteLine ("mhz = {0}", info.mhz); Console.WriteLine ("nodes = {0}", info.nodes); Console.WriteLine ("sockets = {0}", info.sockets); Console.WriteLine ("cores = {0}", info.cores); Console.WriteLine ("threads = {0}", info.threads); } } ---------------------------------------------------------------------- Compile and run this code with: $ gmcs libvirt-test.c# $ LIBVIRT_DEBUG=1 mono ./libvirt-test.exe ---------------------------------------------------------------------- DEBUG: libvirt.c: virInitialize (register drivers) DEBUG: libvirt.c: virConnectOpen (name=test:///default) DEBUG: libvirt.c: do_open (name "test:///default" to URI components: scheme test opaque (null) authority (null) server (null) user (null) port 0 path /default ) DEBUG: libvirt.c: do_open (trying driver 0 (Test) ...) DEBUG: libvirt.c: do_open (driver 0 Test returned SUCCESS) DEBUG: libvirt.c: do_open (network driver 0 Test returned SUCCESS) DEBUG: libvirt.c: do_open (storage driver 0 Test returned SUCCESS) DEBUG: libvirt.c: virNodeGetInfo (conn=0xa8d560, info=0x7fff9530c070) Results of virNodeGetInfo: model = i686 memory = 3145728 cpus = 16 mhz = 1400 nodes = 2 sockets = 2 cores = 2 threads = 2 DEBUG: libvirt.c: virConnectClose (conn=0xa8d560) DEBUG: hash.c: virUnrefConnect (unref connection 0xa8d560 test:///default 1) DEBUG: hash.c: virReleaseConnect (release connection 0xa8d560 test:///default) ---------------------------------------------------------------------- Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top