# RibbonToggleButton.CheckedChanged Event

> Occurs when the value of the Checked property changes.

- **Product:** TX Text Control .NET for Windows Forms
- **Section:** Reference
- **Kind:** Event
- **Introduced:** 24.0
- **Namespace:** `TXTextControl.Windows.Forms.Ribbon`
- **Package:** `TXTextControl.TextControl.WinForms.SDK` (assembly `TXTextControl.Windows.Forms.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXTextControl.Windows.Forms.dll` from the setup
- **Path:** TX Text Control .NET for Windows Forms > Reference > TXTextControl.Windows.Forms.Ribbon > RibbonToggleButton.CheckedChanged Event
- **306 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbontogglebutton/checkedchanged-event/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbontogglebutton/checkedchanged-event/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbontogglebutton/checkedchanged-event/llms-full.txt

---

### Description

Occurs when the value of the [Checked](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbontogglebutton/checked-property/llms-full.txt) property changes.

### Syntax

```csharp
public event EventHandler CheckedChanged;
```

```vbnet
Public Event CheckedChanged As EventHandler
```

### Examples

The following example records useful context when checked changed occurs.

```csharp
ribbonToggleButton.CheckedChanged += (sender, e) =>
{
    Console.WriteLine($"Checked Changed at {DateTime.Now:u}");
};
```

```vbnet
AddHandler ribbonToggleButton.CheckedChanged,
    Sub(sender, e)
        Console.WriteLine($"Checked Changed at {DateTime.Now:u}")
    End Sub
```

---

## Nearby

- **Previous:** [RibbonToggleButton.Checked Property](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbontogglebutton/checked-property/llms-full.txt)
- **Next:** [RibbonToggleButton Constructor](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbontogglebutton/constructor/llms-full.txt)