# DictionaryCopier<TKey, TValue>.DeepCopy(Dictionary<TKey, TValue>, Dictionary<TKey, TValue>, CopyContext)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.dictionarycopier-2/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.dictionarycopier-2/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/DictionaryCodec.cs#L202-L216)

```csharp
public void DictionaryCopier<TKey, DeepCopy(Dictionary<TKey, TValue> input, Dictionary<TKey, TValue> output, CopyContext context)
```

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

### Parameters

- `input` (`Dictionary<TKey, TValue>`): The input.
- `output` (`Dictionary<TKey, TValue>`): The output.
- `context` (`CopyContext`): The context.