OnClientSelecting

The OnClientSelecting event is raised just before a Tile is selected. It is cancellable and precedes the OnClientSelected event. If it is cancelled the OnClientSelected 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 Tile object that fired the event

2. an event arguments object that exposes the following methods

OnClientSelecting event arguments object

Name	Return type	Arguments	Description
get_cancel()	bool		Gets a value that indicates whether the event is cancelled.
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).
set_value(value)		bool	Sets the select value of the tile to true or false (if false the OnClientSelected event will not be canceled)

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

JavaScript

<telerik:RadTextTile ID="Tile1" runat="server" Name="Sample Text Tile" Text="Lorem ipsum dolor sit amet" Title-Text="Sample"
     OnClientSelecting="OnClientSelecting" EnableSelection="true">
</telerik:RadTextTile>

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