/// <summary>从对象容器创建应用主机</summary>
/// <param name="container"></param>
/// <returns></returns>
public static IHost BuildHost(this IObjectContainer container)
{
// 尝试注册应用主机，如果前面已经注册，则这里无效
container.TryAddTransient(typeof(IHost), typeof(Host));
//return new Host(container.BuildServiceProvider());
return(container.BuildServiceProvider().GetService(typeof(IHost)) as IHost);
}
