[BrowsableAttribute(true)]
[C1CategoryAttribute("Category.Action")]
public event C1ToolBarEventHandler ItemCheck

<BrowsableAttribute(True)> _
<C1CategoryAttribute("Category.Action")> _
Public Event ItemCheck As C1ToolBarEventHandler

The CheckBoxes property must be set to true in order for check boxes to be displayed. This event will only be fired when a checkbox button item is checked. If the CheckOnClick property is set to true, user clicks the checkbox button will trigger this client side event and when the AutoPostBack property is set to true, page will post back to the server and then this server side event will be fired. If the CheckOnClick property is set to true, user presses the access key will also trigger this client side event and when the AutoPostBack property is set to true, page will post back to the server and then this server side event will be fired. If the CheckOnClick property is set to false, only when user clicks the checked area before text will trigger this client side event and when the AutoPostBack property is set to true, page to post back to the server and then this event will be fired.