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

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

# ChartObjectsUpdatedEventArgs (class)

Provides data for the chart objects update event.

Environments: Desktop supported · CLI supported · Cloud supported.

## Definition

```csharp
public class ChartObjectsUpdatedEventArgs : ChartObjectsEventArgs
```

## Examples

C#:

```csharp
using cAlgo.API;

namespace cAlgo
{
    // This example shows how to use the Chart ChartObjectsUpdatedEventArgs
    // Draw an object, and then modify it
    public partial class ChartObjectsUpdatedEventArgsSample : Indicator
    {
        protected override void Initialize()
        {
            Chart.ObjectsUpdated += Chart_ObjectsUpdated;
        }

        private void Chart_ObjectsUpdated(ChartObjectsUpdatedEventArgs obj)
        {
            Print("Updated objects #: {0}", obj.ChartObjects.Count);
        }

        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.ObjectsUpdated += self.on_chart_Objects_updated

    def on_chart_Objects_updated(self, args):
        print(f"Updated objects #: {args.ChartObjects.Count}")
```

config.json:

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

## Inherited members

- `public Chart Chart {get;}` (from ChartObjectsEventArgs) [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/ChartObjectsEventArgs/Chart/index.md)
- `public ChartArea Area {get;}` (from ChartObjectsEventArgs) [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/ChartObjectsEventArgs/Area/index.md)
- `public IReadonlyList<ChartObject> ChartObjects {get;}` (from ChartObjectsEventArgs) [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/ChartObjectsEventArgs/ChartObjects/index.md)