BootstrapGridView.BeforeHeaderFilterFillItems Event

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

Namespace: DevExpress.Web.Bootstrap

Assembly: DevExpress.Web.Bootstrap.v23.2.dll

NuGet Package: DevExpress.Web.Bootstrap

Declaration

C#

public event BootstrapGridViewBeforeHeaderFilterFillItemsEventHandler BeforeHeaderFilterFillItems

VB.NET

Public Event BeforeHeaderFilterFillItems As BootstrapGridViewBeforeHeaderFilterFillItemsEventHandler

Event Data

The BeforeHeaderFilterFillItems event's data class is BootstrapGridViewBeforeHeaderFilterFillItemsEventArgs. 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. Inherited from ASPxGridBeforeHeaderFilterFillItemsEventArgs.
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, CriteriaOperator)	Adds a new filter item with the specified filter criteria operator to the header filter. Inherited from ASPxGridBeforeHeaderFilterFillItemsEventArgs.
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.