---
id: "E:cAlgo.API.TimeFrames.Added"
kind: "event"
type: "T:cAlgo.API.TimeFrames"
url: "https://help.ctrader.com/ctrader-algo/references/Period/TimeFrames/Added/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# TimeFrames.Added

Member of [TimeFrames](https://help.ctrader.com/ctrader-algo/references/Period/TimeFrames/index.md).

## Added

Occurs when new TimeFrames are added.

Environments: Desktop supported · CLI works differently · Cloud works differently.

- CLI: Lists only the standard built-in time frames, no custom ones. Added and Removed are never raised.
- Cloud: Lists only the standard built-in time frames, no custom ones. Added and Removed are never raised.

C#:

```csharp
event Action<TimeFramesAddedEventArgs> Added;
```

Python:

```python
api.TimeFrames.Added += handler  # handler(obj: TimeFramesAddedEventArgs)
```

### Returns

`Action<TimeFramesAddedEventArgs>` — 

Available since cAlgo.API 5.3.

### Examples

C#:

```csharp
protected override void OnStart()
{
    TimeFrames.Added += OnTimeFramesAdded;
}

private void OnTimeFramesAdded(TimeFramesAddedEventArgs args)
{
    foreach (var timeFrame in args.TimeFrames)
        Print("Time frame added: {0} ({1})", timeFrame.Name, timeFrame.ShortName);
}
```

Python:

```python
def on_start(self):
    api.TimeFrames.Added += self.on_time_frames_added

def on_time_frames_added(self, args):
    for timeFrame in args.TimeFrames:
        api.Print(f"Time frame added: {timeFrame.Name} ({timeFrame.ShortName})")
```