IRtdServer.cs

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

//Interfaces for working with excel

//this file allows me to not have a reference to excel in the project
//Adding a reference is to a specific version, these interfaces apply to all

//see Kenny Ker's blog http://weblogs.asp.net/kennykerr/archive/2008/12/16/Rtd7.aspx

[Guid( "A43788C1-D91B-11D3-8F39-00C04F3651B8" )]
[TypeLibType( 4160 )]
[ComImport]
public interface IRTDUpdateEvent
{
    [DispId( 10 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void UpdateNotify();
    [DispId( 12 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void Disconnect();
    [DispId( 11 )]
    int HeartbeatInterval { [DispId( 11 ), MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )] get; [DispId( 11 ), MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )] set; }
}

[Guid( "EC0E6191-DB51-11D3-8F3E-00C04F3651B8" )]
[TypeLibType( 4160 )]
[ComImport]
public interface IRtdServer
{
    [DispId( 10 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    int ServerStart( [MarshalAs( UnmanagedType.Interface ), In] IRTDUpdateEvent CallbackObject );
    [DispId( 11 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    [return: MarshalAs( UnmanagedType.Struct )]
    object ConnectData( [In] int TopicID, [MarshalAs( UnmanagedType.SafeArray, SafeArraySubType = VarEnum.VT_VARIANT ), In] ref Array Strings, [In, Out] ref bool GetNewValues );
    [DispId( 12 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    [return: MarshalAs( UnmanagedType.SafeArray, SafeArraySubType = VarEnum.VT_VARIANT )]
    Array RefreshData( [In, Out] ref int TopicCount );
    [DispId( 13 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void DisconnectData( [In] int TopicID );
    [DispId( 14 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    int Heartbeat();
    [DispId( 15 )]
    [MethodImpl( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void ServerTerminate();
}