CeVIO CS6/CS7 の DLL を動的に呼び出すサンプル。32bitビルドでも64bitの CeVIO CS7 を呼び出せます。

Program.cs

// CeVIO の DLL を動的に呼び出すサンプル
// CeVIO 試用版は下記
// https://sites.google.com/site/ceviouserguides/archive/

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace SpeechTestDynamic
{
    class Program
    {
        static void Main(string[] args)
        {

            try
            {
                Assembly assembly = null;

                // CeVIO CS6 / CS7 を探す
                string cevioCS7Path = Environment.ExpandEnvironmentVariables("%ProgramW6432%")
                              + @"\CeVIO\CeVIO Creative Studio (64bit)\CeVIO.Talk.RemoteService.dll";
                string cevioCS6Path = Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86)
                              + @"\CeVIO\CeVIO Creative Studio\CeVIO.Talk.RemoteService.dll";

                if (File.Exists(cevioCS7Path))
                {
                    assembly = Assembly.LoadFrom(cevioCS7Path);
                }
                else if (File.Exists(cevioCS6Path))
                {
                    assembly = Assembly.LoadFrom(cevioCS6Path);
                }

                if(assembly == null)
                {
                    throw new FileNotFoundException();
                }

                Type serviceControl = assembly.GetType("CeVIO.Talk.RemoteService.ServiceControl");
                Type talkerAgent = assembly.GetType("CeVIO.Talk.RemoteService.TalkerAgent");

                //// 【CeVIO Creative Studio】起動
                //ServiceControl.StartHost(false);
                MethodInfo startHost = serviceControl.GetMethod("StartHost");
                startHost.Invoke(null, new object[] { false });

                // インストールされているキャストの名前を列挙
                PropertyInfo property = talkerAgent.GetProperty("AvailableCasts");
                string[] names = (string[])property.GetValue(null, new object[] { });
                foreach (var n in names)
                {
                    Console.WriteLine(n);
                }

                dynamic talker = Activator.CreateInstance(assembly.GetType("CeVIO.Talk.RemoteService.Talker"), new object[] { names[0] });
                Console.WriteLine(talker.Speed);      // 速度(default: 50)
                Console.WriteLine(talker.Tone);       // 高さ(default: 50)
                Console.WriteLine(talker.ToneScale);  // 抑揚(default: 50)
                Console.WriteLine(talker.Volume);     // 音量(default: 50)

                dynamic state = talker.Speak("こんにちは。");
                state.Wait(); // 発話終了待ち

                //// 【CeVIO Creative Studio】終了
                //ServiceControl.CloseHost();
                MethodInfo closeHost = serviceControl.GetMethod("CloseHost");
                var hostCloseMode = assembly.GetType("CeVIO.Talk.RemoteService.HostCloseMode");
                var mode = Enum.Parse(hostCloseMode, "Default"); // Default, Interrupt, NotCancelable
                closeHost.Invoke(null, new object[] { mode });

            }catch(FileNotFoundException)
            {
                Console.WriteLine("CeVIO が見つかりませんでした");
            }
        }
    }
}