alistairjevans

Autofac Changes in 5.0

Framework Version Targeting Changes

From Autofac 5, we will no longer provide a target for .NET 4.5. The minimum version of .NET Framework you can use Autofac with is .NET 4.6.1.

The full targeting list is now:

• netstandard2.1

alistairjevans

#if NETCOREAPP3_0

using System;
using System.Collections.Generic;
using System.Text;
using Xunit;


namespace Autofac.Test
{

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public class GenericTupleDictionaryBenchmark
{
    [Params(100, 500, 1000, 2000, 5000, 10000)]
    public int DictSize { get; set; }

    private (Type open, Type closed)[] allTestTypes = new[]
    {
        (typeof(Service1<>), typeof(Service1<string>)),
        (typeof(Service2<>), typeof(Service2<ContainerBuilder>)),
        (typeof(Service3<>), typeof(Service3<int>)),

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<ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'net461' ">
  <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="1.1.0-preview1.19504.10" />
</ItemGroup>

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private class MyDisposableObject : IDisposable, IAsyncDisposable
{
  private SqlConnection myResource = new SqlConnection();
  private bool isDisposed = false;

  public void Dispose()
  {
    if (!isDisposed)
    {
      isDisposed = true;

alistairjevans

private class MyDisposableObject : IDisposable, IAsyncDisposable
{
  private SqlConnection myResource = new SqlConnection();
  private bool isDisposed = false;

  public void Dispose()
  {
    if (!isDisposed)
    {
      isDisposed = true;

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class BaseClassThatMightHaveChildrenWithResources : IDisposable, IAsyncDisposable
{
  public virtual void Dispose()
  {     
  }

  public virtual ValueTask DisposeAsync()
  {
    Dispose();
    return default;

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class MyObjectWithALock : IDisposable, IAsyncDisposable
{
  private SemaphoreSlim semaphore = new SemaphoreSlim(1, 1);

  public void Dispose()
  {
    semaphore.Dispose();
  }

  public async ValueTask DisposeAsync()

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// Get a host builder
var hostBuilder = CreateHostBuilder(args);

// Add our service as scoped.
hostBuilder.ConfigureServices(srv =>
{
  srv.AddScoped<MyAsyncOnlyDisposableObject>();
});

// Get our container

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private void NotAnAsyncMethod()
{
  var disposableObject = new MyDisposableObject();

  // Unpleasant
  disposableObject.DisposeAsync().GetAwaiter().GetResult();
}