51 lines
2.3 KiB
Markdown
51 lines
2.3 KiB
Markdown
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## About
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Supports the dependency injection (DI) software design pattern which is a technique for achieving Inversion of Control (IoC) between classes and their dependencies.
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## Key Features
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Provides an implementation of the DI interfaces found in the `Microsoft.Extensions.DependencyInjection.Abstractions` package.
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## How to Use
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```cs
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ServiceCollection services = new ();
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services.AddSingleton<IMessageWriter, MessageWriter>();
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using ServiceProvider provider = services.BuildServiceProvider();
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// The code below, following the IoC pattern, is typically only aware of the IMessageWriter interface, not the implementation.
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IMessageWriter messageWriter = provider.GetService<IMessageWriter>()!;
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messageWriter.Write("Hello");
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public interface IMessageWriter
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{
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void Write(string message);
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}
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internal class MessageWriter : IMessageWriter
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{
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public void Write(string message)
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{
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Console.WriteLine($"MessageWriter.Write(message: \"{message}\")");
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}
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}
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```
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## Main Types
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The main types provided by this library are:
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* `Microsoft.Extensions.DependencyInjection.DefaultServiceProviderFactory`
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* `Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions`
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* `Microsoft.Extensions.DependencyInjection.ServiceProvider`
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## Additional Documentation
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* [Conceptual documentation](https://learn.microsoft.com/dotnet/core/extensions/dependency-injection)
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* API documentation
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- [DefaultServiceProviderFactory](https://learn.microsoft.com/dotnet/api/microsoft.extensions.dependencyinjection.defaultserviceproviderfactory)
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- [ServiceCollectionContainerBuilderExtensions](https://learn.microsoft.com/dotnet/api/microsoft.extensions.dependencyinjection.servicecollectioncontainerbuilderextensions)
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- [ServiceProvider](https://learn.microsoft.com/dotnet/api/microsoft.extensions.dependencyinjection.serviceprovider)
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## Related Packages
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- `Microsoft.Extensions.DependencyInjection.Abstractions`
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- `Microsoft.Extensions.Hosting`
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- `Microsoft.Extensions.Options`
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## Feedback & Contributing
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Microsoft.Extensions.DependencyInjection is released as open source under the [MIT license](https://licenses.nuget.org/MIT). Bug reports and contributions are welcome at [the GitHub repository](https://github.com/dotnet/runtime).
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