BootstrapCardView.BeforeHeaderFilterFillItems Event

Enables you to provide custom filter items instead of default ones displayed within a Header Filter.

Namespace: DevExpress.Web.Bootstrap

Assembly: DevExpress.Web.Bootstrap.v19.2.dll


public event BootstrapCardViewBeforeHeaderFilterFillItemsEventHandler BeforeHeaderFilterFillItems
Public Event BeforeHeaderFilterFillItems As BootstrapCardViewBeforeHeaderFilterFillItemsEventHandler

Event Data

The BeforeHeaderFilterFillItems event handler receives an argument of the BootstrapCardViewBeforeHeaderFilterFillItemsEventArgs type. The following properties provide information specific to this event.

Property Description
Column Gets the data column currently being filtered.
Handled Specifies whether the BeforeHeaderFilterFillItems event is handled.
Values Gets a collection that contains the header filer values.


End-users can filter column values using the Header Filter. The CardView control does not display column headers by default. To enable column headers, set the ASPxCardViewSettings.ShowHeaderPanel property to true.To invoke the header filter, an end-user should click on the filter button. The BeforeHeaderFilterFillItems event is raised before the header filter is shown and default filter items are created. The event enables you to provide custom filter items.

The data column whose filter button has been clicked is returned by the BootstrapCardViewBeforeHeaderFilterFillItemsEventArgs.Column property.

Set the ASPxGridBeforeHeaderFilterFillItemsEventArgs.Handled property to true to prevent the BootstrapCardView.HeaderFilterFillItems event from being raised. Otherwise, the event clears the item collection before filling it with default items.

To add custom items to the default items, use the BootstrapCardView.HeaderFilterFillItems event.


The CardView header filter allows the use of HTML tags in an item text. To learn more, see Header Filter.


View the Demo To see this feature in action, please refer to the following online demos: Header Filter, Header Filter - Checked list mode and Header Filter - Custom Values.

See Also