---
id: "T:cAlgo.API.IndicatorAreaEventArgs"
kind: "class"
namespace: "cAlgo.API"
url: "https://help.ctrader.com/ctrader-algo/references/EventArgs/IndicatorAreaEventArgs/"
---

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

# IndicatorAreaEventArgs (class)

The arguments for the indicator area event.

Environments: Desktop supported · CLI supported · Cloud supported.

## Definition

```csharp
public abstract class IndicatorAreaEventArgs
```

## Examples

C#:

```csharp
using cAlgo.API;

namespace cAlgo
{
    // This example shows how to use the IndicatorAreaEventArgs
    // IndicatorAreaEventArgs is the base class of IndicatorAreaAddedEventArgs and IndicatorAreaRemovedEventArgs
    public partial class IndicatorAreaEventArgsSample : Indicator
    {
        protected override void Initialize()
        {
            Chart.IndicatorAreaAdded += Chart_IndicatorAreaAdded;
            Chart.IndicatorAreaRemoved += Chart_IndicatorAreaRemoved;
        }

        private void Chart_IndicatorAreaRemoved(IndicatorAreaRemovedEventArgs obj)
        {
            var indicatorAreaEventArgs = obj as IndicatorAreaEventArgs;
        }

        private void Chart_IndicatorAreaAdded(IndicatorAreaAddedEventArgs obj)
        {
            var indicatorAreaEventArgs = obj as IndicatorAreaEventArgs;
        }

        public override void Calculate(int index)
        {
        }
    }
}
```

Python:

```python
import clr
clr.AddReference("cAlgo.API")

from cAlgo.API import *

class Test():
    def initialize(self):
        api.Chart.IndicatorAreaAdded += self.on_chart_indicator_area_added
        api.Chart.IndicatorAreaRemoved += self.on_chart_indicator_area_removed

    def on_chart_indicator_area_added(self, args):
        print(f"Indicator area added")

    def on_chart_indicator_area_removed(self, args):
        print(f"Indicator area removed")
```

config.json:

```json
{
  "AccessRights": "None",
  "TimeZone": "UTC",
  "IsOverlay": true
}
```

## Properties

- `public IndicatorArea Area {get;}` — Gets the area. [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/IndicatorAreaEventArgs/Area/index.md)
- `public Chart Chart {get;}` — Gets the chart. [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/IndicatorAreaEventArgs/Chart/index.md)