# GrainTimerCreationOptions.Period

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.graintimercreationoptions/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.graintimercreationoptions/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Timers/GrainTimerCreationOptions.cs)

```csharp
public TimeSpan Period
```

The time interval between invocations of the callback method specified when the [IGrainTimer](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.igraintimer/) was constructed. Specify `System.Threading.Timeout.InfiniteTimeSpan` to disable periodic signaling.