BootstrapCardView.HeaderFilterFillItems Event
Enables you to add custom filter items which filter data by the current column to ones displayed within a Header Filter.
Namespace: DevExpress.Web.Bootstrap
Assembly: DevExpress.Web.Bootstrap.v23.2.dll
NuGet Package: DevExpress.Web.Bootstrap
Declaration
Event Data
The HeaderFilterFillItems event's data class is BootstrapCardViewHeaderFilterEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Column | Gets the data column currently being filtered. |
| Values | Gets a collection that contains the header filer values. Inherited from ASPxGridHeaderFilterEventArgs. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| AddShowAll() | Adds the ‘All’ item to the header filter. Inherited from ASPxGridHeaderFilterEventArgs. |
| AddShowBlanks(String) | Creates and adds the “Blanks” filter value to the header filter values. Inherited from ASPxGridHeaderFilterEventArgs. |
| AddShowNonBlanks(String) | Creates and adds the “(Non blanks)” filter value to the header filter values. Inherited from ASPxGridHeaderFilterEventArgs. |
| AddValue(String, String, String) | Adds a new filter item with the specified filter criteria to the header filter. Inherited from ASPxGridHeaderFilterEventArgs. |
| AddValue(String, String) | Adds a new filter item to the header filter. Inherited from ASPxGridHeaderFilterEventArgs. |
| CreateShowBlanksValue(String) | Creates and returns the (Blanks) filter item used to filter a column by blank values. Inherited from ASPxGridHeaderFilterEventArgs. |
| CreateShowNonBlanksValue(String) | Creates and returns the (Non blanks) filter item used to filter a column by blank values. Inherited from ASPxGridHeaderFilterEventArgs. |
Remarks
End-users can filter column values using the Header Filter. To invoke the header filter, an end-user should click the filter button. The HeaderFilterFillItems event is raised after default filter items are created and before the filter dropdown is shown; and enables you to add custom filter items.
Note
The custom filter items can only be used for filtering data by the current column.
The data column whose filter button has been clicked is returned by the BootstrapCardViewHeaderFilterEventArgs.Column property. The list of filter values can be accessed using the ASPxGridHeaderFilterEventArgs.Values property.
Note
ASPxCardView header filter allows the use of HTML tags in an item text. To learn more, see Header Filter.