# IExclusiveLockTransactionTestGrain.Add(int)

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

```csharp
[Orleans.Transaction(1)]
public abstract Task<int[]> Add(int numberToAdd)
```

apply add operation to every transaction state

### Parameters

- `numberToAdd` (`int`)