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OnHierarchyCollapsing

Telerik.Web.UI.GridDataItemCancelEventArgs OnHierarchyCollapsing Property

note

To get or set property values for client API properties, you must call property accessor methods that are named with the get_ and set_ prefixes. For example, to get or set a value for a property such as cancel, you call the get_cancel or set_cancel.

This event is fired when the hierarchy is being collapsed and the HierarchyLoadMode is set to Client.

Fired by RadGrid
Arguments id - id of the RadGrid item that has raised the event itemIndexHierarchical - hierarchical index of the item that has raised the event gridDataItem - the corresponding data item tableView - owner TableView of the item that has raised the event dataKeyValues - data key value for the item that has raised the event domEvent - dom event that was raised for the current event
Can be canceled Yes, set eventArgs.set_cancel(true) to cancel

Example:

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server">
    <ClientSettings>
        <ClientEvents OnHierarchyCollapsing="HierarchyCollapsing" />
    </ClientSettings>
</telerik:RadGrid>
function HierarchyCollapsing(sender, eventArgs) {
    alert("Row: " + eventArgs.get_itemIndexHierarchical() + " is being collapsed");
}
note

get_gridDataItem() is not directly available on the client unless OnRowCreating/OnRowCreated events are hooked up. This is done for optimization purpose. If you need the rowIndex, you can use eventArgs.get_itemIndexHierarchical()