x.For<IUnitOfWork>().HybridHttpOrThreadLocalScoped().Use<MyContext>();

 using (var container = ObjectFactory.Container.GetNestedContainer())
{
    var uow = container.GetInstance<IUnitOfWork>();

}

 new HybridLifecycle().FindCache(null).DisposeAndClear();

1. دسترسی سازنده کلاس Singleton را از نوع Private تعیین کنیم.
2. یک فیلد استاتیک از نوع کلاس Singleton تعریف کنیم.
3. یک خاصیت از نوع استاتیک فقط خواندنی (یعنی فقط get داشته باشد) تعریف کرده تا فیلد استاتیک را مقداردهی و Return کند. به جای پروپرتی میتوان از یک متد استاتیک نیز استفاده کرد.

public class SingletonClassCreator<T> where T:class , new()
    {
        private static T _singletoneInstance;
        private static readonly object Lock = new object();

        public static T SingletoneInstance
        {
            get
            {
                lock (Lock)
                {
                    if (_singletoneInstance == null)
                    {
                        _singletoneInstance = new T();                        
                    }
                }
                return _singletoneInstance;
            }            
        }

        private SingletonClassCreator()
        {            
        }
    }

Today, we are releasing an update to .NET 8.0.400 SDK due to an issue with (MSBuild Crash when publishing containers)[dotnet/sdk#42731].

The .NET 8.0.401 release is available for download. This SDK includes the previously released .NET 8.0.8 Runtime and is in support of Visual Studio 17.11 release. The latest 8.0 release is always listed at .NET 8.0 Releases.

.NET 8 RC2 is now available. This is our last release candidate. This release includes new NuGet package READMEs for .NET packages, simple CLI-based project evaluation for MSBuild, publishing containers to tar.gz archives, and Tensor Primitives for .NET. 

.NET 8 RC1 is now available. This is our first of two release candidates. This release includes a new AOT mode for both Android and WASM, System.Text.Json improvements, and Azure Managed Identity support for containers. Now is great time to pick up and test .NET 8 if you haven’t yet.  

.NET 8 Preview 7 is now available. We’re already at the final preview release for .NET 8 and will now shift to release candidates. Almost all new features for the release are in their final shape. System.Text.Json and codegen have the biggest changes in this build. You’ll want to take a look at those. Now is great time to pick up and test .NET 8 if you haven’t yet.  

.NET Conf 2023 - Celebrating the Release of .NET 8! - Save the Date! 

Here’s a summary of what’s new in this preview release:

• Improved startup debugging experience
• Blazor
  • Form model binding & validation with server-side rendering
  • Enhanced page navigation & form handling
  • Preserve existing DOM elements with streaming rendering
  • Specify component render mode at the call site
  • Interactive rendering with Blazor WebAssembly
  • Sections improvements
  • Cascade query string values to Blazor components
  • Blazor Web App template option for enabling server interactivity
  • Blazor template consolidation
• Metrics
  • Testing metrics in ASP.NET Core apps
  • New, improved, and renamed counters
• API authoring
  • Complex form binding support in minimal APIs
• Servers & middleware
  • HTTP.sys kernel response buffering
  • Redis-based output-cache
   

an exciting release incorporated with plenty of library updates, a new WASM mode, more source generators, constant performance improvements, and NativeAOT support on iOS. We hope you enjoy these new features and improvements. Stay tuned for more updates as we continue our journey of making .NET better, together!