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

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

# DateTimePickerValueChangedEventArgs (class)

Provides data for the DateTimePicker ValueChanged event.

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

- CLI: Never raised in the CLI: the events that pass it never fire there (DateTimePicker.ValueChanged).
- Cloud: Never raised in the cloud: the events that pass it never fire there (DateTimePicker.ValueChanged).

## Definition

```csharp
public class DateTimePickerValueChangedEventArgs
```

Available since cAlgo.API 5.5.

## Examples

C#:

```csharp
protected override void OnStart()
{
    var dateTimePicker = new DateTimePicker { Value = Server.Time };
    dateTimePicker.ValueChanged += OnDateTimePickerValueChanged;
    Chart.AddControl(dateTimePicker);
}

private void OnDateTimePickerValueChanged(DateTimePickerValueChangedEventArgs args)
{
    Print("Date changed from {0} to {1}", args.OldValue, args.NewValue);
}
```

Python:

```python
def on_start(self):
    dateTimePicker = DateTimePicker()
    dateTimePicker.Value = api.Server.Time
    dateTimePicker.ValueChanged += self.on_date_time_picker_value_changed
    api.Chart.AddControl(dateTimePicker)

def on_date_time_picker_value_changed(self, args):
    api.Print(f"Date changed from {args.OldValue} to {args.NewValue}")
```

## Properties

- `public DateTimePicker DateTimePicker {get;}` — Gets the date time picker control. [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/DateTimePickerValueChangedEventArgs/DateTimePicker/index.md)
- `public DateTime NewValue {get;}` — Gets the new selected value. [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/DateTimePickerValueChangedEventArgs/NewValue/index.md)
- `public DateTime OldValue {get;}` — Gets the old selected value. [details](https://help.ctrader.com/ctrader-algo/references/EventArgs/DateTimePickerValueChangedEventArgs/OldValue/index.md)