/// <summary>
/// Retrieve a service from the context, or null if the service is not
/// registered.
/// </summary>
/// <param name="context">The context from which to resolve the service.</param>
/// <param name="service">The service.</param>
/// <param name="parameters">Parameters for the service.</param>
/// <returns>
/// The component instance that provides the service, or null.
/// </returns>
/// <exception cref="DependencyResolutionException"/>
public static object ResolveOptionalService(this IComponentContext context, Service service, params Parameter[] parameters)
{
return(context.ResolveOptionalService(service, (IEnumerable <Parameter>)parameters));
}
/// <summary>
/// Retrieve a service from the context, or null if the service is not
/// registered.
/// </summary>
/// <param name="context">The context from which to resolve the service.</param>
/// <param name="parameters">Parameters for the service.</param>
/// <typeparam name="TService">The service to resolve.</typeparam>
/// <returns>
/// The component instance that provides the service, or null.
/// </returns>
/// <exception cref="DependencyResolutionException"/>
public static TService?ResolveOptional <TService>(this IComponentContext context, IEnumerable <Parameter> parameters)
where TService : struct
{
return((TService?)context.ResolveOptionalService(new TypedService(typeof(TService)), parameters));
}
public static TService ResolveOptionalKeyed <TService>(this IComponentContext context, object serviceKey, IEnumerable <Parameter> parameters) where TService : class
{
return((TService)context.ResolveOptionalService(new KeyedService(serviceKey, typeof(TService)), parameters));
}
public static object ResolveOptionalService(this IComponentContext context, Service service)
{
return(context.ResolveOptionalService(service, NoParameters));
}
public static object ResolveOptional(this IComponentContext context, Type serviceType, IEnumerable <Parameter> parameters)
{
return(context.ResolveOptionalService(new TypedService(serviceType), parameters));
}