# ITransactionTestGrain.AddAndThrow(int)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.transactions.testkit.base/orleans.transactions.testkit.itransactiontestgrain/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.transactions.testkit.base/orleans.transactions.testkit.itransactiontestgrain/methods/)

```csharp
[Orleans.Transaction(1)]
public abstract Task AddAndThrow(int numberToAdd)
```

### Parameters

- `numberToAdd` (`int`)