# Copier_GrainData.DeepCopy(GrainData, GrainData, CopyContext)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.transactions.testkit.base/orleanscodegen.orleans.transactions.testkit.copier-graindata/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.transactions.testkit.base/orleanscodegen.orleans.transactions.testkit.copier-graindata/methods/)

```csharp
public void DeepCopy(GrainData input, GrainData output, CopyContext context)
```

Clones members from `input` and copies them to `output`.

### Parameters

- `input` (`GrainData`): The input.
- `output` (`GrainData`): The output.
- `context` (`CopyContext`): The context.