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OnClientTileSelecting

The OnClientTileSelecting event is raised just before a tileis selected. It is cancellable and precedes the OnClientTileSelected event. 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 that fired the event

  2. an event arguments object that exposes the following methods

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 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.

<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>