# RibbonListView.ItemDropDownOpening Event

> Occurs as a RibbonListViewItem's drop-down menu is opening.

- **Product:** TX Text Control .NET for Windows Forms
- **Section:** Reference
- **Kind:** Event
- **Introduced:** 29.0
- **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 > RibbonListView.ItemDropDownOpening Event
- **343 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbonlistview/itemdropdownopening-event/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbonlistview/itemdropdownopening-event/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbonlistview/itemdropdownopening-event/llms-full.txt

---

### Description

Occurs as a RibbonListViewItem's [drop-down menu](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbonlistview-ribbonlistviewitem/dropdown-property/llms-full.txt) is opening.

### Syntax

```csharp
public event RibbonListView.ItemDropDownOpeningEventHandler ItemDropDownOpening;
```

```vbnet
Public Event ItemDropDownOpening As RibbonListView.ItemDropDownOpeningEventHandler
```

### Examples

The following example records useful context when item drop down opening occurs.

```csharp
ribbonListView.ItemDropDownOpening += (sender, e) =>
{
    Console.WriteLine($"Item Drop Down Opening at {DateTime.Now:u}");
};
```

```vbnet
AddHandler ribbonListView.ItemDropDownOpening,
    Sub(sender, e)
        Console.WriteLine($"Item Drop Down Opening at {DateTime.Now:u}")
    End Sub
```

---

## Nearby

- **Previous:** [RibbonListView.ItemDropDownClosed Event](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbonlistview/itemdropdownclosed-event/llms-full.txt)
- **Next:** [RibbonListView.ItemMouseDown Event](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-windows-forms-ribbon/ribbonlistview/itemmousedown-event/llms-full.txt)