# OnClientTileSelecting

The **OnClientTileSelecting** event is raised just before a [tile](https://www.telerik.com/products/aspnet-ajax/documentation/controls/tilelist/tiles/overview)is [selected](https://www.telerik.com/products/aspnet-ajax/documentation/controls/tilelist/functionality/selecting). It is cancellable and precedes the [OnClientTileSelected event](https://www.telerik.com/products/aspnet-ajax/documentation/controls/tilelist/client-side-programming/events/onclienttileselected). If it is cancelled the OnClientTileSelected event is not raised.

This event can be used to prevent selection based on a certain criteria (e.g. information for the tile that is about to be selected). Cancelling this event will prevent the postback and the selection.

The event handler receives two arguments:

1. the [RadTileList object](https://www.telerik.com/products/aspnet-ajax/documentation/controls/tilelist/client-side-programming/tilelist-object) that fired the event

2. an event arguments object that exposes the following methods

> caption OnClientTileSelecting event arguments object

| **Name**          | **Return type**                                                                                                                                              | **Arguments** | **Description**                                               |
| ----------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------- | ------------------------------------------------------------- |
| get_cancel()      | bool                                                                                                                                                         |               | Gets a value that indicates whether the event is cancelled.   |
| get_tile()        | [RadBaseTile client-side object](https://www.telerik.com/products/aspnet-ajax/documentation/controls/tilelist/tiles/client-side-programming/basetile-object) |               | Gets a reference to the tile that is about to be selected.    |
| get_value()       | bool                                                                                                                                                         |               | Returns true if the tile is selected.                         |
| set_cancel(value) |                                                                                                                                                              | bool          | Sets whether the event will be cancelled (if true is passed). |

The following example shows how to get information about a tile using the **OnClientTileSelecting** event of the **RadTileList**. Note that the event is cancellable and that selection is performed by right-clicking on a tile.

```JavaScript
<telerik:RadTileList RenderMode="Lightweight" runat="server" ID="RadTileList1" AutoPostBack="false" SelectionMode="Single" OnClientTileSelecting="OnClientTileSelecting">
	<Groups>
		<telerik:TileGroup>
			<telerik:RadTextTile Name="Sample Text Tile" Text="Lorem ipsum dolor sit amet" Title-Text="Sample"></telerik:RadTextTile>
		</telerik:TileGroup>
	</Groups>
</telerik:RadTileList>

<script type="text/javascript">
	function OnClientTileSelecting(tileList, args) {
		var tile = args.get_tile();
		var response = confirm(String.format("Toggle the selection of {0}?", tile.get_name()));
		if (!response) {
			args.set_cancel(true);
		}
	}
</script>
```