Question

I need to inject EF context per request. Is there any way to implement it?

Answer 1

The solution proposed in the Unity Discussion list is to create a child container per request, have that child container create the EF context as ContainerControlledLifetime, then have the child container disposed at the end of the request. By doing so you don’t have to create a custom LifetimeManager.

I’m not very familiar with Unity but the principle would be something like this:

Application_BeginRequest(...)
{
  var childContainer = _container.CreateChildContainer();
  HttpContext.Items["container"] = childContainer;
  childContainer.RegisterType<ObjectContext, MyContext>
     (new ContainerControlledLifetimeManager());
}

Application_EndRequest(...)
{
  var container = HttpContext.Items["container"] as IUnityContainer
  if(container != null)
    container.Dispose();
}