# Keyboard Support

A critical requirement for software accessibility is keyboard support as a complete alternative to pointing devices (mouse, etc.). Keyboard support is comprised of navigation key, command key, keyboard navigation, and action keys. **RadAsyncUpload** seamlessly switches between mouse and keyboard navigation. As a part of **Q2 2013** **RadAsyncUpload** control introduced fully built-in keyboard support.

## KeyboardNavigationSettings

Setting the control's **KeyboardNavigationSettings** (*introduced in R2 2016 - ver.2016.2.504*), allows you to associate an activation combination (**CommandKey** + **FocusKey**), which moves focus directly to the **RadAsyncUpload** and enables keyboard navigation. When there are multiple **AsyncUpload** controls on a given page, each of them may have a different activation combination.

The **KeyboardNavigationSettings** exposes two properties to configure the keyboard combination that sets focus to the control:

* **FocusKey**: An upper-case letter or number.

* **CommandKey**: \[Ctrl] , \[Alt] or \[Shift].

Pressing the keys set to these two properties at the same time places the focus on the AsyncUpload. The user can then use the **action keys** for triggering specific action or the \[Tab] key for navigation.

**Example 1**: Setting the **KeyboardNavigationSettings** for **RadAsyncUpload**

```ASPNET
<telerik:RadAsyncUpload RenderMode="Lightweight" ID="RadAsyncUpload1" runat="server" >
    <KeyboardNavigationSettings CommandKey="Alt" FocusKey="P" />
</telerik:RadAsyncUpload>
```

![asyncupload-accessibilityandinternalization-keyboardsupport-focus](https://www.telerik.com/products/aspnet-ajax/documentation/assets/fcdd730770ff0f5258603a642d6e0568/asyncupload-accessibilityandinternalization-keyboardsupport-focus.png)

> note Note that in some browsers certain keyboard combinations are already occupied and used by the browser itself.

## Action keys

**RadAsyncUpload** uses \[Space] key to activate the "File Upload" dialog window.

![asyncupload-accessibilityandinternalization-keyboardsupport-open](https://www.telerik.com/products/aspnet-ajax/documentation/assets/b2346aa2f72a40727fa2c8a0775b8c24/asyncupload-accessibilityandinternalization-keyboardsupport-open.png)

## Moving through the files list

**RadAsyncUpload** allows end-users to navigate through the selected files structure using the \[Tab] and \[Shift] + \[Tab]. To delete a file from the list the user should press \[Enter] while focus is on the respective file:

![asyncupload-accessibilityandinternalization-keyboardsupport-navigationpage](https://www.telerik.com/products/aspnet-ajax/documentation/assets/a2688dbbb4d01df79dfea2c132f1d78a/asyncupload-accessibilityandinternalization-keyboardsupport-navigationpage.png)

## See Also

* [Getting Started](https://www.telerik.com/products/aspnet-ajax/documentation/controls/asyncupload/getting-started)

* [Skins](https://www.telerik.com/products/aspnet-ajax/documentation/controls/asyncupload/appearance-and-styling/skins)

* [Localizing RadAsyncUpload](https://www.telerik.com/products/aspnet-ajax/documentation/controls/asyncupload/accessibility-and-internationalization/localizing-radasyncupload)