# OnClientKendoWidgetInitializing

The **OnClientKendoWidgetInitializing** occurs just before the Kendo Widget is initialized. The arguments are the options object that will be passed to the underlying [Kendo UI Gantt](https://docs.telerik.com/kendo-ui/api/javascript/ui/gantt) constructor.

The event handler receives two parameters:

1. The instance of the **Gantt** control firing the event.

2. An **eventArgs** parameter that represents the options object that will be passed to the Kendo UI Gantt constructor

```ASP.NET
<telerik:RadGantt RenderMode="Lightweight" runat="server" id="RadGantt1" OnClientKendoWidgetInitializing="OnClientKendoWidgetInitializing">
</telerik:RadGantt>
```

```JavaScript
function OnClientKendoWidgetInitializing(sender, eventArgs) {
    var options = eventArgs;
    // change the options object passed to .kendoGantt() method
    // https://docs.telerik.com/kendo-ui/api/javascript/ui/gantt
}
```

## See Also

* [Client-Side Basics](https://www.telerik.com/products/aspnet-ajax/documentation/controls/gantt/client-side-programming/overview)

* [Client-Side Events](https://www.telerik.com/products/aspnet-ajax/documentation/controls/gantt/client-side-programming/events/overview)