# PlacementStrategyExtensions.AddPlacementDirector(ISiloBuilder, Func<IServiceProvider, IPlacementDirector>)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.hosting.placementstrategyextensions/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.hosting.placementstrategyextensions/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Runtime/Hosting/PlacementStrategyExtensions.cs#L37)

```csharp
public static ISiloBuilder AddPlacementDirector<TStrategy>(this ISiloBuilder builder, Func<IServiceProvider, IPlacementDirector> createDirector)
```

Adds a placement director.

### Parameters

- `builder` (`ISiloBuilder`): The builder.
- `createDirector` (`Func<IServiceProvider, IPlacementDirector>`): The delegate used to create the placement director.

### Returns

The builder.