ublic void RegisterExtensionAs(
  [MarshalAs(UnmanagedType.BStr)]
  ref String extensionName)
{
  try 
  {
    // initialize data members
    nameToNumber      = new Hashtable();
    numberToName      = new Hashtable();
    numberToParams    = new Hashtable();
    numberToRetVal    = new Hashtable();

    propertyNameToNumber  = new Hashtable();
    propertyNumberToName  = new Hashtable();

    numberToMethodInfoIdx  = new Hashtable();
    propertyNumberToPropertyInfoIdx  = new Hashtable();

    // Заполнение хэш-таблиц
    Type type = this.GetType();
    Type[] allInterfaceTypes = type.GetInterfaces();

    // Определение идентификатора
    int Identifier = 0;

    foreach(Type interfaceType in allInterfaceTypes)
    {
      if (
        !interfaceType.Name.Equals("IDisposable") 
        && !interfaceType.Name.Equals("IManagedObject")
        && !interfaceType.Name.Equals("IRemoteDispatch")
        && !interfaceType.Name.Equals("IServicedComponentInfo")
        && !interfaceType.Name.Equals("IInitDone")
        && !interfaceType.Name.Equals("ILanguageExtender")
        )
      {
        // Обработка методов
        MethodInfo[] interfaceMethods = interfaceType.GetMethods();
        foreach (MethodInfo interfaceMethodInfo in interfaceMethods)
        {
          nameToNumber.Add(interfaceMethodInfo.Name, Identifier);
          numberToParams.Add(Identifier,
            interfaceMethodInfo.GetParameters().Length);
          if (typeof(void) != interfaceMethodInfo.ReturnType)
            numberToRetVal.Add(Identifier, true);

            Identifier++;
          }

        // Обработка свойств
        PropertyInfo[] interfaceProperties = interfaceType.GetProperties();
        foreach (PropertyInfo interfacePropertyInfo in interfaceProperties)
        {
          propertyNameToNumber.Add(interfacePropertyInfo.Name, Identifier);

          Identifier++;
        }
      }
    }

    foreach (DictionaryEntry entry in nameToNumber)
      numberToName.Add(entry.Value, entry.Key);
    foreach (DictionaryEntry entry in propertyNameToNumber)
      propertyNumberToName.Add(entry.Value, entry.Key);

    // Сохранение информации о методах класса 
    allMethodInfo = type.GetMethods();

    // Сохранение информации о свойствах класса
    allPropertyInfo = type.GetProperties();

    // Отображение номера метода на индекс в массиве
    foreach (DictionaryEntry entry in numberToName)
    {
      bool found = false;
      for(int ii = 0; ii < allMethodInfo.Length; ii++)
      {
        if (allMethodInfo[ii].Name.Equals(entry.Value.ToString()))
        {
          numberToMethodInfoIdx.Add(entry.Key, ii);
          found = true;
        }
      }
      if (false == found)
        throw new COMException("Метод не реализован ");
    }

    // Отображение номера свойства на индекс в массиве
    foreach (DictionaryEntry entry in propertyNumberToName)
    {
      bool found = false;
      for(int ii = 0; ii < allPropertyInfo.Length; ii++)
      {
        if (allPropertyInfo[ii].Name.Equals(entry.Value.ToString()))
        {
          propertyNumberToPropertyInfoIdx.Add(entry.Key, ii);
          found = true;
        }
      }
      if (false == found)
        throw new COMException("The property is not implemented");
    }

    // Компонент инициализирован успешно
    // Возвращаем имя компонента
    extensionName  = componentName;
  }
  catch (Exception)
  {
    return;
  }
}

using System;
using System.EnterpriseServices;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

[assembly: AssemblyVersion("1.0.0.1")]
[assembly: ApplicationAccessControl(AccessChecksLevel=AccessChecksLevelOption.Application)]
[assembly: ApplicationActivation(ActivationOption.Library)]
[assembly: CLSCompliant(true)]
[assembly: Guid("2A583381-79E9-4842-9A68-5B2C8A113199")]
[ProgId("AddIn.Componenta")]
[ComVisible(true)]
[ClassInterface(ClassInterfaceType.None)]
public class Componenta : ServicedComponent, IInitDone
{
    private IAsyncEvent asyncEvent    = null;
    private IStatusLine statusLine    = null;

    /// <summary>
    /// Инициализация компонента
    /// </summary>
    /// <param name="connection">reference to IDispatch</param>
    public void Init(
        [MarshalAs(UnmanagedType.IDispatch)]
        object connection)
    {
        asyncEvent  = (IAsyncEvent)connection;
        statusLine  = (IStatusLine)connection;
    }

    /// <summary>
    /// Возвращается информация о компоненте
    /// </summary>
    /// <param name="info">Component information</param>
    public void GetInfo(
        [MarshalAs(UnmanagedType.SafeArray, SafeArraySubType=VarEnum.VT_VARIANT)]
        ref object[] info)
    {
        info[0] = 2000;
    }

    public void Done(){}
}

[System.Runtime.InteropServices.Guid("2FB73E2F-0467-4820-9EF6-F030C4EDB876")]

SED>[System.Runtime.InteropServices.Guid("2FB73E2F-0467-4820-9EF6-F030C4EDB876")]
SED>

[assembly: ApplicationAccessControl(AccessChecksLevel=AccessChecksLevelOption.Application)]
[assembly: ApplicationActivation(ActivationOption.Library)]
[assembly: CLSCompliant(true)]
[assembly: Guid("36DBEB0E-024B-4ae7-A265-E986FD0FD43B")]
[System.Runtime.InteropServices.Guid("55FC714B-7544-4662-99BF-957298711031")]
[ProgId("AddIn.Componenta")]
[ClassInterface(ClassInterfaceType.None)]
public class Componenta : ServicedComponent, IInitDone
{
...
}