# Codec_JoinAttributionGrain.ReadValue(Reader<TReaderInput>, Field)

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

```csharp
public JoinAttributionGrain ReadValue<TReaderInput>(ref Reader<TReaderInput> reader, Field field)
```

Reads a value.

### Parameters

- `reader` (`Reader<TReaderInput>`): The reader.
- `field` (`Field`): The field.

### Returns

The value.