---
id: "E:cAlgo.API.MultiSelect.SelectedItemsChanged"
kind: "event"
type: "T:cAlgo.API.MultiSelect"
url: "https://help.ctrader.com/ctrader-algo/references/Controls/MultiSelect/SelectedItemsChanged/"
---

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

# MultiSelect.SelectedItemsChanged

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

## SelectedItemsChanged

This event will trigger if the MultiSelect selected items changed

Environments: Desktop supported · CLI not supported · Cloud not supported.

- CLI: Accepted without error but never displayed, so control events such as Click are never raised.
- Cloud: Accepted without error but never displayed, so control events such as Click are never raised.

C#:

```csharp
public event Action<MultiSelectSelectedItemsChangedEventArgs> SelectedItemsChanged;
```

Python:

```python
multiSelect.SelectedItemsChanged += handler  # handler(obj: MultiSelectSelectedItemsChangedEventArgs)
```

### Returns

`Action<MultiSelectSelectedItemsChangedEventArgs>` — 

Available since cAlgo.API 5.6.

### Examples

C#:

```csharp
var multiSelect = new MultiSelect();
foreach (var symbolName in new[] { "EURUSD", "GBPUSD", "USDJPY" })
    multiSelect.AddItem(symbolName);
multiSelect.SelectedItemsChanged += args => Print("Selected symbols: {0}", string.Join(", ", args.MultiSelect.SelectedItems));
Chart.AddControl(multiSelect);
```

Python:

```python
def on_start(self):
    multiSelect = MultiSelect()
    for symbolName in ["EURUSD", "GBPUSD", "USDJPY"]:
        multiSelect.AddItem(symbolName)
    multiSelect.SelectedItemsChanged += self.on_selected_items_changed
    api.Chart.AddControl(multiSelect)

def on_selected_items_changed(self, args):
    api.Print(f"Selected symbols: {', '.join(args.MultiSelect.SelectedItems)}")
```