# OnCommand

## OnCommand

The Server-side **OnCommand** event is raised when the RadRibbonBar has Command specified.

The event handler function receives two arguments:

1. The **RadRibbonBar** which has fired the event. This argument is of type object, but can be cast to the **RadRibbonBar type**.

2. An EventArgs object with the following properties:

   * **CommandArgument** - optional parameter passed to the Command event along with the associated CommandName.

   * **CommandName** -command name associated with the RadRibbonBarButton control that is passed to the Command event.