# GrainManifest Constructors

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.metadata.grainmanifest/)

## GrainManifest(ImmutableDictionary<GrainType, GrainProperties>, ImmutableDictionary<GrainInterfaceType, GrainInterfaceProperties>) {#constructor-system-collections-immutable-immutabledictionary-orleans-runtime-gra-3c82c6d7}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.metadata.grainmanifest/constructors/constructor-system-collections-immutable-immutabledictionary-orleans-runtime-gra-3c82c6d7/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Manifest/GrainManifest.cs#L27-L43)

```csharp
public GrainManifest(ImmutableDictionary<GrainType, GrainProperties> grains, ImmutableDictionary<GrainInterfaceType, GrainInterfaceProperties> interfaces)
```

Initializes a new instance of the [GrainManifest](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.metadata.grainmanifest/) class.

### Parameters

- `grains` (`ImmutableDictionary<GrainType, GrainProperties>`): The grain properties.
- `interfaces` (`ImmutableDictionary<GrainInterfaceType, GrainInterfaceProperties>`): The interface properties.