# InternalServiceCollectionExtensions

Package: [Microsoft.Orleans.Serialization](/orleans/docs/api/csharp/microsoft.orleans.serialization/) 10.0.0

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Serialization) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Utilities/ServiceCollectionExtensions.cs#L10)

```csharp
public static class InternalServiceCollectionExtensions
```

Extension methods for configuring dependency injection.

## Methods

- [AddFromExisting(IServiceCollection, Type, Type)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.utilities.internal.internalservicecollectionextensions/methods/addfromexisting-this-microsoft-extensions-dependencyinjection-iservicecollection-487163ce/)
- [AddFromExisting(IServiceCollection)](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.utilities.internal.internalservicecollectionextensions/methods/addfromexisting-2-this-microsoft-extensions-dependencyinjection-iservicecollecti-3206cf38/)