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