# IGrainInterfacePropertiesProvider Methods

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

## Populate(Type, GrainInterfaceType, Dictionary<string, string>) {#populate-system-type-orleans-runtime-graininterfacetype-system-collections-gener-0698a884}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.metadata.igraininterfacepropertiesprovider/methods/populate-system-type-orleans-runtime-graininterfacetype-system-collections-gener-0698a884/)

```csharp
public abstract void Populate(Type interfaceType, GrainInterfaceType grainInterfaceType, Dictionary<string, string> properties)
```

Adds grain interface properties to `properties`.

### Parameters

- `interfaceType` (`Type`): The interface type.
- `grainInterfaceType` (`GrainInterfaceType`): The interface type id.
- `properties` (`Dictionary<string, string>`): The properties collection which this calls to this method should populate.