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webformdependencyinjection_autofac4
using System;
using System.Reflection;
using System.Web;
using Autofac.Core.Lifetime;
namespace Autofac.Integration.Web
{
public class AutofacServiceProvider : IServiceProvider
{
private readonly ILifetimeScope _rootContainer;
public AutofacServiceProvider(ILifetimeScope rootContainer)
{
_rootContainer = rootContainer;
}
public object GetService(Type serviceType)
{
ILifetimeScope lifetimeScope;
var currentHttpContext = HttpContext.Current;
if (currentHttpContext != null)
{
lifetimeScope = (ILifetimeScope)currentHttpContext.Items[typeof(ILifetimeScope)];
if (lifetimeScope == null)
{
void CleanScope(object sender, EventArgs args)
{
if (sender is HttpApplication application)
{
application.RequestCompleted -= CleanScope;
lifetimeScope.Dispose();
}
}
lifetimeScope = _rootContainer.BeginLifetimeScope(MatchingScopeLifetimeTags.RequestLifetimeScopeTag);
currentHttpContext.Items.Add(typeof(ILifetimeScope), lifetimeScope);
currentHttpContext.ApplicationInstance.RequestCompleted += CleanScope;
}
}
else
{
lifetimeScope = _rootContainer;
}
if (lifetimeScope.IsRegistered(serviceType))
{
return lifetimeScope.Resolve(serviceType);
}
return Activator.CreateInstance(serviceType, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.CreateInstance, null, null, null);
}
}
}
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