Using System.Runtime.InteropServices;

namespace MvcWebRole1
{
    public class WebRole : RoleEntryPoint
    {
        [DllImport("Mpr.dll",
                   EntryPoint = "WNetAddConnection2",
                   CallingConvention = CallingConvention.Winapi)]
        private static extern int WNetAddConnection2(NETRESOURCE lpNetResource,
                                                     string lpPassword,
                                                     string lpUsername,
                                                     System.UInt32 dwFlags);

        [DllImport("Mpr.dll",
                   EntryPoint = "WNetCancelConnection2",
                   CallingConvention = CallingConvention.Winapi)]
        private static extern int WNetCancelConnection2(string lpName,
                                                        System.UInt32 dwFlags,
                                                        System.Boolean fForce);

        [StructLayout(LayoutKind.Sequential)]
        private class NETRESOURCE
        {
            public int dwScope;
            public ResourceType dwType;
            public int dwDisplayType;
            public int dwUsage;
            public string lpLocalName;
            public string lpRemoteName;
            public string lpComment;
            public string lpProvider;
        };

        public enum ResourceType
        {
            RESOURCETYPE_DISK = 1,
        };

        public static void MountShare(string shareName,
                                      string driveLetterAndColon,
                                      string username,
                                      string password)
        {
            if (!String.IsNullOrEmpty(driveLetterAndColon))
            {
                // Make sure we aren't using this driveLetter for another mapping
                WNetCancelConnection2(driveLetterAndColon, 0, true);
            }

            NETRESOURCE nr = new NETRESOURCE();
            nr.dwType = ResourceType.RESOURCETYPE_DISK;
            nr.lpRemoteName = shareName;
            nr.lpLocalName = driveLetterAndColon;

            int result = WNetAddConnection2(nr, password, username, 0);

            if (result != 0)
            {
                throw new Exception("WNetAddConnection2 failed with error " + result);
            }
        }

        public override bool OnStart()
        {
            MountShare("\\10.0.0.4\my-share",
                       "z:",
                       "<ユーザー名>",
                       "<パスワード>");

            return base.OnStart();
        }
    }
}